Fix tests for Ruby 1.8

* `shoulda` version is specified (Ruby 1.8-compativle);
* Hash#to_s differences issue;
* `assert_not_respond_to` method is undefined;
* two tests raise an exception for unknown reason; make them eventually.
Ignore Gemfile.lock
Putting jQuery into No-Conflict Mode
Fix Generate section
Merge branch 'remove-Gemfile_lock'
Merge branch 'jquery-noconflict-mode'
Merge branch 'fix-create-widget-instruction'
Merge branch 'fix-tests'