added javascript bits to add selected moves to 'responding to' form.
Multi-Source Fun, Part 2

* The "respond to these moves" button now actually goes to the make a move
* form and passes all of the source post IDs.
* On make a move form, all source move titles displaying.
added not entirely working code to iterate over move source array.
added not entirely working code to iterate over move source array.

so broken. wow broken.
Merge branch 'feature/multi-source-fun' of github.com:scholarslab/ivanhoe into feature/multi-source-fun
merging things.