Fix errors and i18n for alert dialog on topics
Sanitize topic path
Remove unsafe strings and strip white spaces from topic name
i18n support for topic name

Add getTreeNodeName method to get raw tree node name, and translate and sanitize tree node name in getTreeNodeDisplayName method
Cleanup code
fixing conflicts
Merge branch 'hissy-i18n/TopicTree' into develop
Merge branch 'develop' of github.com:concrete5/concrete5-5.7.0 into develop