- explicitly set the doctrine/cache package to version 1.3.1 as version 1.4.0 is causing serious performance problems (at least with Windows hosts)
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- moved the relevant code from the ACL:: initUserRoles() method into ACL::getPrivileges() and removed ACL:: initUserRoles()
- minor method renaming
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updated Twitter Bootstrap to version 3.3.2
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- some minor code refactoring for some classes
- some doc block changes
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- hold already retrieved cache data into an PHP Array
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