Prepare for bank verification

* Create new method for user checking if a bank exists
* Add current password field to the right bank account info field
* Add test checking new method
Begin smoothing out UI for bank account

* Update bank account adding and verifying
* Set up new methods for users including
  verification
* Add in new javascript to allow submiting of
  the form after bank account update
Add bank account verification process

* Add bank account verification process through the ui and rough
  prototype working in rails.

* Need to remember to use refactor and also add bank_verification
  and verification_state to the user db... this is very important
  to help speed up the application and prevent constant calling
  to the balanced api
Add columns to user and landlord table

* Add Verification boolean and verification uri to landlord
  and user models
Merge pull request #21 from jeffAwesome/bank-verify

Bank verify