Animations: make marked coordinate a model

On second thought, it's better to use a model (which allows Hobo's input-many) than to try to hack DRYML to understand serialized array.

[#47371327]
Animations: indicate Animation required fields

[#47371327]
Animations: validate name uniqueness in activity

[#47371327]
Animations: validate Animation name length >= 1

[#47371327]
Animations: setup permissions

[#47371327]
Animations: rm index auto_action

[#47371327]
Animations: enable new/create for activity

[#47371327]
Animations: add "new Animation" link to activity

[#47371327]
Animations: editable form for Animation

[#47371327]
Animations: show page for Animation

[#47371327]
Animations: return to activity after deleting

[#47371327]