Update UsersMassProcessingForm.class.php

fix SQL-Error
Fixes #1215
Merge pull request #1214 from joshuaruesweg/patch-2

Update UsersMassProcessingForm.class.php
Disabled scroll blocking for touch devices
Renamed RELATIVE_WCF_DIR => WCF_PATH
Added missing guest access
Fixed closing of dialogs
Merge branch 'master' of github.com:WoltLab/WCF
Merge branch 'master' of github.com:WoltLab/WCF
Fix formatting of stacktrace in log
UserException no longer is a logged exception
Fixed exception
Fixed usernames with apostrophes
Clean up WCF.Template
Exception ID is now properly disabled
Add {if} to WCF.Template
Fix formatting in WCF.Template and use a function instead of eval
Added missing language item
Fixed use-statement order
Fix several bugs in WCF.Template