[x] some pdb resource not found, but still listed in filemanager/filepicker
[x] some standalone component main page needs to be updated.
[x] metadataepiurl - check for global variable, in case of embeded component + update documentation
[x] RewriteMap davredir redirects to root directory in case of failed process, all user's data disclosured. Add RewriteCond to prevent it, report HTTP 404
[x] Westlife-metadata service should start mono from cvmfs by default