Added a UTabs, a tab navigation system
UTabs is no longer interactive
Move UTab to the folder UTabs and renamed it to UTabItem, to avoid confusion with UTabs
Merge pull request #76 from uCtrl/UTabs

Added a UTabs, a tab navigation system
The tabs can now have 3 type of display:
- Icon only
- Text only
- Icon + Text
The tabs will now also stretch to fill the parent size, unless specified otherwise
Merge pull request #77 from uCtrl/UTabsRefactor

The tabs can now have 3 type of display:
Merge branch 'master' into UComboBoxRefactor

Conflicts:
	src/uCtrlDesktop/qml/uCtrlDesktopQml/UI/UFontAwesome.qml