Allow PageImages to be used out of the Blog / Page context.

- Explicit association classes so the extension works in
non-Refinery-namespace engines;
- Add an option to disable inclusion in Page or Blog extensions.
Initialize tabs and attach models using a generalized logic.
Add test coverage
Change initializer for a #to_prepare block.

This ensures refinery-page-images gets attached
on each request in development. No more `undefined method images`.
Remove useless id nesting `jQuery()`
Update to be jQuery 1.9 compatible

- Change hover to mouseenter mouseleave
- Remove call to `jQuery.live` and use `jQuery.on` instead
Fix specs under postgres
Merge pull request #81 from hooktstudios/master

Allow PageImages to be used out of the Blog / Page context.
Merge pull request #82 from hooktstudios/fix-for-jquery-1.9

Fix for jQuery 1.9
explain workaround for deploying on heroku with asset precompilation

related to https://github.com/refinery/refinerycms-page-images/issues/69
Merge pull request #85 from hayksaakian/master

special instructions for deploying to heroku that resolve the asset precompilation error
Update Travis CI config.

- don't test Ruby 1.8.7 because we dropped support for it
- don't test 1.8 modes for JRuby and Rubinius
- test Ruby 2.0.0
- don't install gems from development group
Update specs due to recent Capybara/FactoryGirl upgrade.
added japanese translations
Merge pull request #86 from snowsunny/master

Added japanese translations
Adds title/photoby_url/yellowkorner_url fields
Adds caption back to attr_accessible and adds photoby/yellowkorner_url translation
Merge branch 'master' of github.com:jerefrer/refinerycms-page-images