0.2-RC1: more robust formula editing.

Fixes:
- MathJax-Formulas tex-source get sproperly saved now
- users do not have to enter $$ (MathJax-Delimiters) anymore manually
- formulas in detail-edit view are rendered now properly (needed a setTimeout)
- default workspace cookie is set properly for guests and users
- in the ckEditor, a formula-container is now visible (has a white border)
- linked in CodeCogs-Editor into our mathjax-editing help dialog
- removed output/SVG setting of MathJax Configuration (editing formula does not work with SVG)

Features:
- new styling of tag-filter-info area

Pending:
- current layout currently does explicitly not support IE9, IE10 and Opera

Note:
Installation depends on DeepaMehta 4.1.1-SNAPSHOT as of commit:
ca61964a27e6757848e638c3bafc9374c6aff45c

Documentation:
https://www.eduzen.tu-berlin.de/software-komponenten (German)
https://www.eduzen.tu-berlin.de/zur-notizen-webanwendung (German / Get User Account)