Merge pull request #109 from barbararamiro/MOBILE-677

MOBILE-667: Style for the forum name, intro, number of discussions, sync option, attachment, and paging.
MOBILE-714 fs: DirectorySize function fails when are subdirectories without files inside
MOBILE-667 forum: Display section name
MOBILE-706 Prevent cordova plugins to raise errors
MOBILE-716 sync: Fixed interval time never decrease if a hook has a interval time lower than the defined in the app
MOBILE-677 forum: Removed some elements in the pagination
MOBILE-677: Style for forum page navigation