Fixed date picker
Added CSS for native lists
Merge branch 'master' of github.com:WoltLab/WCF
Added missing sitemap styling
Fixed rendering bug within dialogs after multiple calls
date picker no longer sets a value if empty
Fixed installation of an additional application

Fixes #1121
Small style optimization
Protect log with a .htaccess
Add max-age header for cookies

Closes #1083
Fixed icon names: plus/minus => chevron-right/down

Fixes #1123
Merge branch 'master' of github.com:WoltLab/WCF
Clean up compiled css when cache is cleared
Use short ternary statement
Fix enlarging in ImageViewer
Added fixed width for popovers
Merge branch 'master' of github.com:WoltLab/WCF
Major overhaul of caching system (work in progress)

See #1124
Major overhaul of caching system (work in progress)

See #1124
Major overhaul of caching system (work in progress)

See #1124