MODE-295 Added CMIS API

This pull request has following changes:
- parent/pom - chemistry version and chemistry dependencies in section dependecy management
- web/modeshape-cmis is generical CMIS library. It contains a few classes which I override to allow multiple repositories handling. 
-web/modeshape-cmis-war is integration test servlet (same as REST and WEB-DAV)
-deploy/../modeshape-cmis Servlet's definition for AS7 (similar to REST/WEB-DAV)
-assembly descriptor modified to include CMIS into AS7 dist
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Configuration same as for REST/WEB-DAV