* bump version
* include calendar week in week chooser
* table names in SQL
* show save flash message
* prevent migration warning
* drop default value to prevent error when server version is not set
* csrf token for duplicate actions
* updated translations
* prevent that items will be marked as exported if invoice can not be generated
* check for existing invoice number to prevent that invalid invoices will be generated
* allow to add a unique id to invoice preview files on batch export
* hide delete invoice action with deactivated permission
* try to automatically fix duplicate invoice id
* calc once, then re-use
* prevent invalid theme switch
* allow to turn off weekly-quick-entries by permissions
* remove 00:00 from date-times that likely do not need a time
* fix datepicker out of window
* make duplicate project action available on details page
* move "weekly hours" form to main menu
* changed label of week chooser
* hide quick entries menu for punch mode users
* bump version
* fix invisible class on labels
* fail safe removal of foreign key
* check if optional form field exists before accessing it
* silently ignore stopped timesheets
* prevent colliding parameter names
* make sure decimal duration is always rendered with two decimals
* simplify translation
* fix#2751 ANSI_QUOTES
* rename composer task
* fix billable statistic rates
* added missing translation for export
* allow to detect used query filters
* allow to set label in action buttons
* allow to reset last search from session
* migrate invoice archive to new search system
* display number of used search filters
* improved play and stop button if only one record is allowed
* stop button first in action menu
* fix skin colors
* autofocus term field in search form
* fix responsive column layout in invoice listing
* improve responsive header for small screens
* improve report visibility
* fix timesheet duration, which breaks validation
* added contributing section in README
* do not allow to change project for existing activities - fixes#2576
* bump theme version to fix FOSUserBundle dependency
* use entity color instead of inherited one - fixes#2200