l'estimation
* LocalizedText.resx:
* FrontOfficeApiController.cs: renamed the Tex generation method
* FrontOfficeController.cs: fixed the Estimate creation
* WorkFlowController.cs: return model validation errors when updating
a writting.
* TexFormatter.cs: Simple mime-type content declaration
* Global.asax.cs:
* T4TemplateEstimate.cs: cleanning
* BBCodeHelper.cs: BBCodes: docpage summary gone into a new aside
element
* App.master: thanks links are now contained in a div element
* style.css: clearer
* Estimate.aspx: Fixed the creation/edition/removal processes
* Estim.tt: added the column "Count" to the writtings table.
* RegisterViewModel.cs: internationalization
* Writting.cs: stronger model
* Estim.tex: cleaning
