Changes for 'Incorrect behavior on clicking user name of related proposal.' implemented.

Completes https://trello.com/card/incorrect-behavior-on-clicking-user-name-of-related-proposal/50db1f1f9aaccd882d00272c/121

Separated code for index and search actions, and moved many shared things into separate methods.  The before filter for the old method is removed. 

When the My Votes button is selected, the title of the proposal list uses the term Votes instead of Topics.  Not sure everyone agrees, but it makes sense to me to indicate that these are the versions the user voted for more strongly.