MyCyma

[evol] image frame improvements #3 (cleanup)

[evol] added artwork view and now use the new image frame in all views

[evol] image frame improvements #2 (was artwork frame improvements)

[fix] work around steps order when done at the same date (considering people would add them in chronological order) using image id

[evol] added group view and linked it from the tree and set views

[fix] ensure link to the tree view in the menu works even if coming from a page in another namespace

[evol] artwork frame improvements #1

[fix] display a proper error page when an object is not found

[evol] added set view and linked it from tree view

[fix] sets should be ordered in tree view