basic calendarToPdf implementation
Added colors, wekkends and holidays for calendar to print as pdf
CalendarToPdf completed except for paired bts
Merge remote-tracking branch 'upstream/master'
Merge remote-tracking branch 'upstream/master'
Issue # 15 completed. Calendar can now be printed to pdf.
Merge remote-tracking branch 'upstream/master'
Merge branch 'master' of https://github.com/AnnaStorozhenko/Ajour
Issue #15: fixed bug when bt was displayed incorrectly in case it started long enough before from date; added validation for dates when trying to print calendar with displaying error messages; modifiaed page layout for calendar in order for input form to take less space and validation messeges to display in one row; refactored code for CalendarToPdfExporter to make it cleaner; added marking today with green color on calendar's header
Merge remote-tracking branch 'upstream/master' into development
Merge pull request #72 from AnnaStorozhenko/development

To issue #58 "Possibility to run Ajour from scratch with default 'admin' user "
Update THIRD-PARTY-LICENSE-NOTICES.md
merge with upstream/development
Merge pull request #71 from Bohdan-Tereta/development

Issue #15 fixed
Update CONTRIBUTING.md

The way of label proposal is added in item 5
Merge pull request #73 from AnnaStorozhenko/development

To issue #62 GetHoliday. HolidayControllerTests updated
Fixed issue #74: Migrations can't be applied to database
User
merge with development
Merge pull request #75 from Bohdan-Tereta/development

Fixed issue #74: Migrations can't be applied to database