Block call to change idea until it's done

The call to change a job on the page was returning before the page had
been updated so the tests would fail intermittently.

Also, whitespace :cop:
Merge pull request #38 from swalberg/fix_flaky_ajax_test

Block call to change idea until it's done
Style edit form buttons using bootstrap, add cancel button, refactor
coffeescript accordingly, modify home_page.rb to click button instead of
link
Merge branch 'bootstrap_edit_form_buttons' closes #34