Updated component descriptions

Added license options for each visible components in installer UI

Change-Id: I3cfbb8607427e6f330ef3b53376b0f55c68b6bd5
Reviewed-by: Sami Makkonen <sami.makkonen@digia.com>
Reviewed-by: Iikka Eklund <iikka.eklund@theqtcompany.com>
Updated LGPL license files

Renamed LICENSE.LGPLv3 -> LICENSE
Removed unnecessary LGPLv2.1 & LGPLv3 configurations & added new LGPL
one. Also moved FDL license under 3rd party component

Change-Id: I0b92bf5efa2ec969573c4658b513d6e17316ed0c
Reviewed-by: Iikka Eklund <iikka.eklund@theqtcompany.com>