api v1 - restapi renamed to apipie

added architectures controller in v1 API

api v1 - operatingsystems controller

cleanup after merge conflict with latest develop branch

split api routes to separate routes file

api v1 - render errors with rabl

better detection of permission failure in model
fix ApiConstraints
catch bad routes in api and return json

fixes #1775 - API versioning name space

fixes #1764 changing per_page setting would update only after a restart

this commit changes it back to an area in the code which gets evaluated
everytime instead of upon startup only

[UI] fixes drop downs not showing up correctly when viewing a page with errors

fixes #1165 add inherited params display and override option to the host form.

Signed-off-by: Ohad Levy <ohadlevy@gmail.com>