Function Manager: started working on folders implementation
Merge branch 'master' into folders
Functions Manager: moved paths in a separate column
First working version of folders in Function Manager

TODO: delete and all the evil cases
Merge branch 'master' into folders
Merge branch 'master' into folders
Function Manager: it is now possible to recursively delete folders
Function Manager: fixed some more deletion cases
NEW: Function Manager: added folders with drag & drop functionality