Enable CM_RenderAdapter_Abstract::_getTplPath() to search across all namespaces
search templates accross all namespaces when fetching meta-keywords and meta-description
Merge branch 'master' of github.com:cargomedia/CM into issue-1138

Conflicts:
	library/CM/RenderAdapter/Page.php
fix broken fetchKeywords()
use boolean consistently
simplify default param value assignment
add unit test for CM_RenderAdapter_Abstract::_getTplPath()
use hard-coded mock classname
separate test into clear block for subtests
add test for class hierarchy traversal
Used update stamp instead of dirty flag for SVM models

- Compared with the modification date of the model file
- Updated db structure, marked all models as dirty initially
- Adjusted tests
add assertions on return-value
add test for nonexistent template file
Fixed time mocking issue

- CMTest_TH::timeInit() should reset the mock time to the system time
Moved SVM training to a new cli command "maintenance start-local"
Synchronized "shared" maintenance jobs
Don't pass thumbnailCount to wowza publish/unpublish and sync
Introduce Video:: and ArchiveVideo::getThumbnail
Add wowza thumbnail import cli command
Add video streamchannel archive CLI import task
Don't abbreviate