Remove old functions
Split tree preference getter/setter into two separate functions
Fix merge error
Typo - wrong variable name
Cleanup - use WT_File class instead of manipulating filesystem
Split tree/user preference getter/setter into two functions
Use consistent terminology (preference versus setting)
Allow the User object to work as a null object (e.g. for visitors)
Fix: #1377127 - Dates without a year in the monthly calendar
Tree settings cannot be null
Visitors have a null 'User' object
Fix #1377133 - Admin does not receive a mail for new user registrations
PHPDoc
Missed part of the WT_File::mkdir update
PHPDoc
Tidy up DB schema updates
Fix: cannot upgrade from webtrees 1.0.0 to latest version
Typo
Whitespace changes to reduce merge conflicts with the assets branch
Merge remote-tracking branch 'webtrees-base/master' into develop