CMS-1725: Speedup update of PageTemplate
CMS-1685 Text Extractors do not support Open Office
Merge pull request #65 from enonic/CMS-1725-4.7

CMS-1725: Speedup update of PageTemplate
Moved some API interfaces.
CMS-1943 Add method of intercepting authentication requests.
CMS-1725 Speedup update of PageTemplate
Ignore failing tests.
 CMS-1944 Refactor plugin extension registration for better extensibility. Added extension points.
Merge pull request #69 from enonic/CMS-1685

CMS-1685 Text Extractors do not support Open Office
Added tests for extension points.
CMS-1944 Refactor plugin extension registration for better extensibility.
Simplified enterprise detection.