* stupidtable.js:

* jquery.tablesorter.js:
* jquery.tablesorter.min.js: now using "stupid table", that fixes the
  row additions and deletions

* ChooseADate.aspx: Page to choose a date between valid candidates

* YavscModel.csproj:
* FreeDate.cs: a free date

* FrontOfficeApiController.cs: cleanning using clauses

* FrontOfficeController.cs: - cleanning using clauses
- check user role before editing the model object

* GoogleController.cs: view "ChooseADate" in successfull response to
  "DateQuery"


* WorkFlowController.cs: check user's role to drop the estimate.

* Estimate.aspx: * now using "stupid table", that fixes the row
  additions and deletions.
* the user interface more intuitive at row deletion 

* DateQuery.aspx: changed the query parameters

* Web.csproj: google date + stupidtable - tablesorter

* IContentProvider.cs: cleaned an unused "using" clause

* WorkFlowManager.cs: cleanning spaces

yavscModel/Google/FreeDate.cs

@@ -0,0 +1,53 @@
+//
+//  FreeDate.cs
+//
+//  Author:
+//       Paul Schneider <paulschneider@free.fr>
+//
+//  Copyright (c) 2015 Paul Schneider
+//
+//  This program is free software: you can redistribute it and/or modify
+//  it under the terms of the GNU Lesser General Public License as published by
+//  the Free Software Foundation, either version 3 of the License, or
+//  (at your option) any later version.
+//
+//  This program is distributed in the hope that it will be useful,
+//  but WITHOUT ANY WARRANTY; without even the implied warranty of
+//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//  GNU Lesser General Public License for more details.
+//
+//  You should have received a copy of the GNU Lesser General Public License
+//  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+using System;
+
+namespace Yavsc.Model.Google
+{
+	/// <summary>
+	/// Free date.
+	/// </summary>
+	public class FreeDateSet
+	{
+		/// <summary>
+		/// Gets or sets the reference.
+		/// </summary>
+		/// <value>The reference.</value>
+		public DateTime [] Values { get; set; }
+		/// <summary>
+		/// Gets or sets the duration.
+		/// </summary>
+		/// <value>The duration.</value>
+		public TimeSpan Duration { get; set; }
+		/// <summary>
+		/// Gets or sets the attendees.
+		/// </summary>
+		/// <value>The attendees.</value>
+		public string Attendees { get; set; }
+		/// <summary>
+		/// Gets or sets the location.
+		/// </summary>
+		/// <value>The location.</value>
+		public string Location { get; set; }
+
+	}
+}
+