MyCyma

[evol] created display_artwork_frame() helper function and now use it in the welcome page + created a set/group tree view with it too

[fix] wrong method call

[evol] use SQL sessions instead of cookies-based ones

[fix] forgot to sync db dump

[evol] added image size info in the 'latest 10 artworks' page (closes #7)

[evol] added a small margin around image in the 'latest 10 artworks' page

[fix] corrected language display in user view

[evol] language can be forced in the user admin page (closes #6) (no user interface yet)

[info] new interresting links about DB relationship (mostly HABTM)

[fix] db schema sync (multiple materials and no id field for simple HABTM (or fetching remote object ids would fail))