Fix for attachment button broken in IE (IE8)

From http://cksource.com/forums/viewtopic.php?t=24218
Merge pull request #104 from PaulOstazeski/master

Fix for #100
added greek (el) support to embed plugin
Merge pull request #106 from stream7/master

Added greek (el) support for embed plugin
CKEDITOR.replace should be called from within $(document).ready block.
Change the default store_dir for ckeditor assets to be in the public/system directory.
Merge pull request #108 from joe1chen/master

CKEDITOR.replace should be called from within $(document).ready block.
Upgrade to 3.6.3
Bring back old config.js
Merge pull request #112 from delwyn/3.6.3

Update CKEditor to 3.6.3
Use an in-memory SQLite database for testing and run the template migration for the selected backend each time.
Fix some typos.
Swap assert_equal arguments. Expected result should come first.
Change PostsTest integration test into PostsControllerTest functional test. That is really what it is and this allows us to use assert_select.
Remember to destroy attachments after tests.
Get the dummy app to load initializers from the codebase instead of using a copy.
Update all gems and update dummy app to Rails 3.2.3. Note that Paperclip 3.0.1 is broken.
Dragonfly backend for ActiveRecord only.

There appears to be an odd race condition that causes a test to almost always fail under Rails 3.1.3 but almost always pass under Rails 3.2.3. The uploaded file is deleted before we are finished using it. It is possible that this only happens when testing.
Merge pull request #115 from chewi/master

Dragonfly backend plus raft of other improvements
Prepare for 3.7.0 release