Refactored to add possibility to set user and date. Added tests.
Fixed bug APP-387, refactored post scss.
Various changes:

- refactored MndGetCalendarObject service from factory to service
- added possibility to switch the user of the calendar
- fixed tags bug
- fixed various calendar bugs
Various changes:

- added possibility to freeze and unfreeze coins
- restricted access to the UI for managing coins to coin managers
Various changes.
Finished holiday importing
Merge pull request #30 from mondora/APP-385

APP-385