* replace strings by class references
* allow 64 chars for username
* fix time can be optional and null
* fix timezone is not respected
* bump version
* fix br in attribute
* support different visible duration from booked duration
* fix image URL
- setting "rounding days" not required
- developer: added user pref for public holiday group (to be used by plugins)
- developer: added WorkingTimeYearEvent (to be used by plugins)
- user pref: cleanup work contract form and support more fields (to be used by plugins)
- code cleanup
- bump theme and composer packages
* prevent too long values for user preferences
* add chart value 0 to y-axis if last value > 0, to always display the zero line (project details)
* add user-preferences to invoice hydrator
* DateTime vs DateTimeInterface
* simplify permission config
* fix query for teamleads limiting to only selected teams not possible
* open "create new project/activity" form in modal
* re-use action translation for create action title
* do not pre-select first customer in list - fixes#1828
* sort user preferences in sections for better visual grouping
* show comment date only in hover of user avatar
* include user teams in user entity
* prevent unauthorized access via API
* improve teamlead permission handling in team timesheets
* add team data to user entity
* add security tests
* highlight menu for invoice template copy
* unified handling of invoice data across all templates
* access to the current users data in invoice templates
* permission improvement in invoice form
* allow to skip record rows
* allow to add new invoice locations without overwriting the global ones
* allow to order user preferences
* change permission for normal users with access to view_other_timesheets
* properly validate invoice template field length
* allow to replace multiple variables in cell values text
* upgraded office invoice template
* doctrine deprecation fix
* upgrade phpoffice/phpword
* fix future begin check for default rounding rules
* dashboard widget counter: respect visibility and teams - fixes#1161
* fix future begin check for default rounding rules
* added new events for pre and post invoice rendering
* fix permission issue for users without team seeing all records
* prevent error in spreadsheet renderer for empty invoices
