Fixed 'apply changes to existing users' option
Merge branch 'master' of github.com:WoltLab/WCF
Fix for assigned but no longer associated label groups
Updating minified JavaScript files
Fixes category acl option cache builder
Merge branch 'master' of github.com:WoltLab/WCF
Proper validation of file extension (supports multipel e.g. .tar.gz)
Merge branch 'master' of github.com:WoltLab/WCF
added an avatar for spiders

i’ve created this as default avatar for robots.

on coderz i also created individual avatars for some spiders:
https://coderz.pro/UsersOnlineList/#robots
Merge pull request #1613 from FirePanther/(new)-spider-avatar

added an avatar for spiders