Added spinner with download progress in Language View

Change-Id: I3c8fe492bd3ce4ba8cd31e9cd4f209d0f041a749
Added restriction for user to move around the app while downloading, updated json files with content
Add restriction for user to change language & download content if no wifi or 3g
Restrict user to use tabBar if no downloaded content
Implemented iBeaconId downloading from web and saving them in device

Change-Id: I5e6650a9874abc86c5522cd927fdc4795bbd4e5c
Added localized strings for hud.labelText
Implemented DetailView design

Change-Id: Ib8d55a016cdeceac930b6d85efdeb7a25d366543
Update tab bar

Change-Id: I0906ccefb8cc191960b06aad30a0ec7533818b3e
Fixed bug when beacons monitoring off after sliding from mainView to detailedView
TabBar animation draft