Added Zend Studio to .gitignore
star ratings without images.
Merge pull request #2222 from Ramoonus/patch-1

Added Zend Studio to .gitignore
ui datepicker. Closes #2223.
Stripped comments from gitignore, no need for that
star rating tweaks
Fix category order + nesting Closes #2226.
Fix pay form Closes #2225
Fix reports Closes #2211.
Check we're viewing a product Closes #2227
stars
fix session expirey and clear old expired sessions
removed easter egg
Fix ordering. Closes #2229.
Revised session handler based with some code from Eric Manns wp_session class idea.

The (long term) plan will be to use that when stable and in WP core.
Until then, our wc_session_ implementation will work.

This is similar to what we had, with the exeption of not using
transients to ensure the data persists.

@coenjacobs please view this.
Session cleanup should be part of implementation
Hooks for individual use overriding on the frontend
Tweaks to session handler
Variations should not inherit prices, and variations with no price set should be hidden. Closes #2232.

Also improves price display for empty/free variations.
Prompt for variation price since its required.