Finish socket.io prep.
Finish socket.io for ideas, comments, and rooms.
Merge pull request #47 from jDeppen/socket

Finish socket.io for ideas, comments, and rooms.
Update Comments and Idea to use idea_id for properties.
Add get method to CommentStore.
Load socket.io library in karma.conf.
Suspend two CommentsSpec tests.
Fix incorrect reference to an Idea's id in Idea component.