Deleted old cleaning-function-service and implemented full comment cleaning in existing create-comment-keywords.ts

Implemented cleaning function service and removed the old unused method in create-comment.component.ts.

UX-Group - diagram update

See merge request arsnova/topic-cloud!54

merge '123-profanity-switch-in-sessions' into 'staging'

Closes #122 and #123

See merge request arsnova/topic-cloud!55

merge 'update-admin-dialog' into 'staging'

Closes #43

See merge request arsnova/topic-cloud!56

Merge 'tag-cloud' into 'staging'

Closes #115, #114, #112, #119, #5, and #117

See merge request arsnova/topic-cloud!53

# Conflicts:
#	src/app/components/shared/_dialogs/spacy-dialog/spacy-dialog.component.ts

Change endpoint to spacy

See merge request arsnova/topic-cloud!52

This commit ensures that the tag cloud administration window is updated
when the blacklist or profanity list is updated. This will apply the new
settings directly.

Closes #5