fixes #4261, #5496 - add release version to activation key

4261-actkey-releasever - p-r comment cleaning

4261-actkey-releasever - rubocop and grunt ci fixes

4261-actkey-releasever - fixed before_filter for system registration w/o activation key

4261-actkey-releasever - p-r cleaning
Merge pull request #4025 from thomasmckay/4261-actkey-releasever

fixes #4261, #5496 - add release version to activation key
fixes #5191 - System Group -> Host Collections: schema migrations
fixes #5191 - System Group -> Host Collections: file renaming
fixes #5191 - System Group -> Host Collections: route updates
fixes #5191 - System Group -> Host Collections: model updates
fixes #5191 - System Group -> Host Collections: controller updates
fixes #5191 - System Group -> Host Collections: helper and lib updates
fixes #5191 - System Group -> Host Collections: view updates
fixes #5191 - System Group -> Host Collections: test/spec updates
fixes #5191 - System Group -> Host Collections: ui updates
fixes #5191 - System Group -> Host Collections: more ui file moves
fixes #5191 - System Group -> Host Collections: ui test updates
fixes #5191 - System Group -> Host Collections: fixes from testing
fixes #5191 - System Group -> Host Collections: rename total_systems to total_content_hosts on the collection