Added enabling/disabling document downloading
Added enabling/disabling document viewing
Added enabling/disabling document annotating
Added enabling/disabling document exporting
Added field "Email for Collaborator"
Added functionality the registration of collaborator for opportunity annotate document

git-svn-id: https://plugins.svn.wordpress.org/groupdocs-documents-annotation/trunk@970580 b8457f37-d9ea-0310-8a92-e5e31aec5664