fixes #4290 add validation for user group max name length of 255

Fixes #4537 - user can set empty roles array via API

fixes #4524 - The logged in user should be the default one in create new hosts

Fixes #4553 - miscellaneous filters editing

fixes #4201 - update operating system by label, use description or fallname otherwise

fixes #3163 - add link to first use instructions

fixes #3001 - Facts searchable by both host id and name

Fixes #4353 - plugins don't create permissions until DB is migrated

fixes #4539 - changed os minor attribute to not required

fixes #3767 - add new host to hosts menu