Merged master into FilePicker, after fixing removal from master first (what was this code doing there in the first place?)
Added simple functional ContentManager.
Added textview to item_content so we can display file name as well
no more silent failures
Added documentation to ConcealCrypto
Removed unused DummyManager. Added brackets to conditionals
Fixed bracket and format in ContentManagerFactory
Merge pull request #34 from AlexKolpa/FilePicker

File picker and simple content manager