GUI improvements

* add fixed navbar with users links
* add links  to next and previous month
Merge pull request #1 from simi/gui-imp

GUI improvements
Export only descriptioned entries
Skip wrong data
Skip wrong data #2
Update existing
Add console command.
Merge pull request #2 from simi/console

Add console command.
Dont import freckles entries repeatedly
Merge remote-tracking branch 'origin/rails4_migration'
Remove logs from codebase
Added login of user using sorcery. Sign-up is not implemented,
user needs to be created in console.

Changed entries index the way that only entries by logged user
are shown.
Added model for projet, created migration to assign all current entries
to one project, associations for project, entry and user and implemented
form for creation of entries.
Updated migration to create users with dummy password using information
from config file.
Enhanced code using comments by papricek
- added module for time parsing
- removed entry.username column
- enhanced syntax on couple places
- replaced date_field with test_field
Added listing of entries for one month only.
Also fixed not working mass assigment for project which made migration
not work when creating desksnearme project.
Also switched to d/m/y from m/d/y.
Added jquery stuff
- jquery datepicker for date selection
- jquery autocomplete for project name
Added missing jquery files.
Fixed create method, which was not working with autocomplete
and added default date to today with abylity to toggle datepicker
by button.
Removed not-necessary image which was breaking text
of the button.