diff --git a/Yavsc.Abstract/:w b/Yavsc.Abstract/:w
deleted file mode 100644
index 91349057..00000000
--- a/Yavsc.Abstract/:w
+++ /dev/null
@@ -1,28 +0,0 @@
-using System;
-using System.Collections.Generic;
-using Yavsc.Services;
-
-namespace Yavsc.Billing
-{
-    public interface IBillable {
-        string GetDescription ();
-        List<IBillItem> GetBillItems();
-        long Id { get; set; }
-
-        string ActivityCode { get; set; }
-
-        string PerformerId { get; set; }
-        string ClientId { get; set; }
-        /// <summary>
-        /// Date de validation de la demande par le client
-        /// </summary>
-        /// <returns></returns>
-
-        DateTime? ValidationDate { get; }
-
-        bool GetIsAcquitted ();
-
-        string GetFileBaseName (IBillingService service);
-
-    }
-}
diff --git a/Yavsc.Abstract/Yavsc.Abstract.csproj b/Yavsc.Abstract/Yavsc.Abstract.csproj
deleted file mode 100644
index 44af2c42..00000000
--- a/Yavsc.Abstract/Yavsc.Abstract.csproj
+++ /dev/null
@@ -1,122 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003" Sdk="Microsoft.NET.Sdk" ToolsVersion="15.0">
-  <PropertyGroup>
-    <MinimumVisualStudioVersion>10.0</MinimumVisualStudioVersion>
-    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
-    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
-    <ProjectGuid>{67F9D3A8-F71E-4428-913F-C37AE82CDB24}</ProjectGuid>
-    <OutputType>Library</OutputType>
-    <AppDesignerFolder>Properties</AppDesignerFolder>
-    <RootNamespace>Yavsc</RootNamespace>
-    <AssemblyName>Yavsc.Abstract</AssemblyName>
-    <TargetFramework>netcoreapp2.0</TargetFramework>
-    <FileAlignment>512</FileAlignment>
-    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
-    <NuGetPackageImportStamp>
-    </NuGetPackageImportStamp>
-    <EnableDefaultCompileItems>false</EnableDefaultCompileItems>
-  </PropertyGroup>
-  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
-    <DebugSymbols>true</DebugSymbols>
-    <DebugType>full</DebugType>
-    <Optimize>false</Optimize>
-    <OutputPath>bin\Debug\</OutputPath>
-    <DefineConstants>DEBUG;TRACE</DefineConstants>
-    <ErrorReport>prompt</ErrorReport>
-    <WarningLevel>4</WarningLevel>
-    <CodeAnalysisRuleSet />
-  </PropertyGroup>
-  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
-    <DebugType>pdbonly</DebugType>
-    <Optimize>true</Optimize>
-    <OutputPath>bin\Release\</OutputPath>
-    <DefineConstants>TRACE</DefineConstants>
-    <ErrorReport>prompt</ErrorReport>
-    <WarningLevel>4</WarningLevel>
-    <CodeAnalysisRuleSet />
-  </PropertyGroup>
-  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Lua|AnyCPU'">
-    <OutputPath>bin\Lua\</OutputPath>
-    <DefineConstants>TRACE</DefineConstants>
-    <Optimize>true</Optimize>
-    <DebugType>pdbonly</DebugType>
-    <PlatformTarget>AnyCPU</PlatformTarget>
-    <ErrorReport>prompt</ErrorReport>
-    <CodeAnalysisRuleSet>MinimumRecommendedRules.ruleset</CodeAnalysisRuleSet>
-  </PropertyGroup>
-  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'ZicMoove|AnyCPU'">
-    <OutputPath>bin\ZicMoove\</OutputPath>
-    <DefineConstants>TRACE</DefineConstants>
-    <Optimize>true</Optimize>
-    <DebugType>pdbonly</DebugType>
-    <PlatformTarget>AnyCPU</PlatformTarget>
-    <ErrorReport>prompt</ErrorReport>
-    <CodeAnalysisRuleSet>MinimumRecommendedRules.ruleset</CodeAnalysisRuleSet>
-  </PropertyGroup>
-  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Yavsc|AnyCPU'">
-    <OutputPath>bin\Yavsc\</OutputPath>
-    <DefineConstants>TRACE</DefineConstants>
-    <Optimize>true</Optimize>
-    <DebugType>pdbonly</DebugType>
-    <PlatformTarget>AnyCPU</PlatformTarget>
-    <ErrorReport>prompt</ErrorReport>
-    <CodeAnalysisRuleSet>MinimumRecommendedRules.ruleset</CodeAnalysisRuleSet>
-  </PropertyGroup>
-  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'WinDev|AnyCPU'">
-    <DebugSymbols>true</DebugSymbols>
-    <OutputPath>bin\WinDev\</OutputPath>
-    <DefineConstants>DEBUG;TRACE</DefineConstants>
-    <DebugType>full</DebugType>
-    <PlatformTarget>AnyCPU</PlatformTarget>
-    <ErrorReport>prompt</ErrorReport>
-    <CodeAnalysisRuleSet>MinimumRecommendedRules.ruleset</CodeAnalysisRuleSet>
-  </PropertyGroup>
-  <ItemGroup>
-    <Compile Include="IBaseTrackedEntity.cs" />
-    <Compile Include="IIdentified.cs" />
-    <Compile Include="ITitle.cs" />
-    <Compile Include="Billing\IAccountBalance.cs" />
-    <Compile Include="Billing\IBillable.cs" />
-    <Compile Include="Billing\IBillingImpacter.cs" />
-    <Compile Include="Billing\IBillItem.cs" />
-    <Compile Include="Billing\ICommandLine.cs" />
-    <Compile Include="Billing\IEstimate.cs" />
-    <Compile Include="Workflow\IRating.cs" />
-    <Compile Include="Blogspot\IBlog.cs" />
-    <Compile Include="Identity\IApplicationUser.cs" />
-    <Compile Include="Identity\UserInfo.cs" />
-    <Compile Include="Identity\Security\ICircleAuthorization.cs" />
-    <Compile Include="Identity\Security\ICircleAuthorized.cs" />
-    <Compile Include="IT\ICode.cs" />
-    <Compile Include="Properties\AssemblyInfo.cs" />
-    <Compile Include="Workflow\IActivity.cs" />
-    <Compile Include="Workflow\IBlackListed.cs" />
-    <Compile Include="Workflow\ICommandForm.cs" />
-    <Compile Include="Workflow\IContact.cs" />
-    <Compile Include="Workflow\ICoWorking.cs" />
-    <Compile Include="Workflow\IGoogleCloudMobileDeclaration.cs" />
-    <Compile Include="Workflow\ILocation.cs" />
-    <Compile Include="Workflow\IPerformerProfile.cs" />
-    <Compile Include="Workflow\IPosition.cs" />
-    <Compile Include="Workflow\ISpecializationSettings.cs" />
-  </ItemGroup>
-  <ItemGroup>
-    <None Include="app.config" />
-    <None Include="MarkdownParser.y" />
-    <None Include="packages.config">
-      <SubType>Designer</SubType>
-    </None>
-  </ItemGroup>
-  <ItemGroup>
-    <Content Include="project.json" />
-    <Content Include="Workflow\IQuery.cs" />
-    <Content Include="YavscLib.sln" />
-  </ItemGroup>
-  <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
-       Other similar extension points exist, see Microsoft.Common.targets.
-  <Target Name="BeforeBuild">
-  </Target>
-  <Target Name="AfterBuild">
-  </Target>
-  -->
-</Project>
diff --git a/Yavsc.Abstract/YavscLib.sln b/Yavsc.Abstract/YavscLib.sln
deleted file mode 100644
index 123e21a0..00000000
--- a/Yavsc.Abstract/YavscLib.sln
+++ /dev/null
@@ -1,17 +0,0 @@
-
-Microsoft Visual Studio Solution File, Format Version 12.00
-# Visual Studio 2012
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Yavsc.Abstract", "Yavsc.Abstract.csproj", "{67F9D3A8-F71E-4428-913F-C37AE82CDB24}"
-EndProject
-Global
-	GlobalSection(SolutionConfigurationPlatforms) = preSolution
-		Debug|Any CPU = Debug|Any CPU
-		Release|Any CPU = Release|Any CPU
-	EndGlobalSection
-	GlobalSection(ProjectConfigurationPlatforms) = postSolution
-		{67F9D3A8-F71E-4428-913F-C37AE82CDB24}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
-		{67F9D3A8-F71E-4428-913F-C37AE82CDB24}.Debug|Any CPU.Build.0 = Debug|Any CPU
-		{67F9D3A8-F71E-4428-913F-C37AE82CDB24}.Release|Any CPU.ActiveCfg = Release|Any CPU
-		{67F9D3A8-F71E-4428-913F-C37AE82CDB24}.Release|Any CPU.Build.0 = Release|Any CPU
-	EndGlobalSection
-EndGlobal