[ADD] overview layout
[ADD]  Tags
[ADD] Today, bank and future balance
[ADD] Flags and paymode
Merge remote-tracking branch 'origin/feature/Model' into feature/GUI
[ADD] display the overview fragment with the correct colored values
[FIX] change the look of the drawer and set header unclickable
[ADD] add the account information in the overview panel of an account
[ADD] click on the account in overview fragment leads to the account fragment
[FIX] accounts are no more identified by their name in the drawer but by their ids
[ADD] Recycle view lib