Merge pull request #662 from nsendetzky/master

Reduces the number of tags stored in the cache
Merge pull request #663 from nsendetzky/master

Inserts default locale site item only when migrating to tree structure
Merge pull request #664 from nsendetzky/master

Improves cache tag handling and fixes URLs config for T&C/privacy policy
Merge pull request #665 from nsendetzky/master

Fixes variable name
Merge pull request #666 from nsendetzky/master

Improves layout in checkout summary page
Merge pull request #667 from nsendetzky/master

Enforces locale item being available in context and improves compatibility with MySQL 5.6
Merge pull request #668 from nsendetzky/master

Hands over category ID to detail page for stage plugin
Updates composer.lock file for 2014.07 release
Merge pull request #669 from nsendetzky/master

Implements possibility to modify cached content
Merge pull request #670 from nsendetzky/master

Improves compatibility with other cache implementations by using md5 hashes only
Merge pull request #671 from nsendetzky/master

Improves compatibility with other cache implementations and caching of the basket
Improves performance by caching sub-managers and search attributes