[] Correcting Vaadin depencies in build.

Replacing Vaadin 6 dependencies with Vaadin 7 in Gradle build.
[3-4] IntelliGIDNavigator class created.

Class IntelliGIDNavigator created.
[3-4] NavigatorConfigurationManager

IntelliGIDNavigator replaced by NavigatorConfigurationManager, which
configures a basic Vaadin Navigator.
[] Updated build dependencies

Dependencies in Gradle build updated.
[3-4] Basic navigation classes

Created and tested some mandatory classes for navigation and
presentation, all around the home page.
[3-4] UI classes for Home and AddFolder

UI classes for a basic functional application. Home and AddFolder stub
pages created. AddFolder is not reachable in the running application
yet.
[] Gradle build with Vaadin Plug-in

Gradle build updated to run Vaadin application.
Merge branch 'master' into HomePage

Conflicts:
	ui/build.gradle
[3-4] Deleting useless typing mistake folder.

Deleting "inteligid" folder/package.