removed template description box from ribbon menu
added help page for executable archives.
added id to right-click menus in editor
Merge pull request #221 from t-gerhard/master

Web improvements
[unfinished] added organizations (only for sites)
fix
fix
fix
fix
migration for organizations
added organizations to webfrontends
fixed migration
fixed migration
fix
added organization column to users
fix
fix
orga in account now also in web
enhancetable can now filter by custom keys
fixed error message