Simplify taks builder script

Cleaner animation blocks, now also for deletion
No more segment IDs and no more counter necessary.
Code style
Clean up and bugfix json lib and deprecated raise style
Fix line count in multiline textfields
Fix template bug
Remove commented classes in json lib
Add Fontawesome to template. Apply code style.
Apply Grid to meta information
Document and rename star rating widget update function
Merge branch 'taskbuilder' into ck_json_tb