Add method for updating bhajan and update all tests.

- Add update test and method.
- Update test ids to use datetime to help debug.
- Filter test values from API results.
- Simplify test callbacks.
- Increase test suite timeout.
Merge pull request #90 from sgunturi/update-method

Add method for updating bhajan and update all tests.
Simplify bhajan methods.
Add functionality to edit bhajans as admin.

- Add edit view and add edit link to bhajan view if logged in.
- Add routes for editing bhajans.
- Backup database.
- Misc: Exclude test values from API results; allow test suite to run
  while server is running locally.
Merge pull request #91 from sgunturi/edit-bhajan

Add functionality to edit bhajans as admin.
Bump to 0.8.0.