Adding a member channels feature and working on course collections.

commands/AddCollection.js

commands/AddCourseToCollection.js

commands/AddMemberChannel.js

commands/AssignMemberRole.js

commands/AssignPermission.js

commands/BulkAddCourseToCollection.js

commands/DeleteMemberChannel.js

commands/RevokeMemberRole.js

commands/RevokePermission.js

components/courseCollections.js

components/memberManagement.js

components/permConfig.js

locales/de.json

locales/en.json

models/CollectionBulkAddInteraction.js

models/CourseCollection.js

models/ServerConfig.js

util/perm.js