Fixes #4196 "Power ON this machine" disappeared for new VMWare hosts

(cherry picked from commit 39505a60be16d5af7f1c42e5ef175bec27607190)

fixes #4188 - api/v2/status incorrectly shows api_version: 1

(cherry picked from commit 36b32e9352b7a9c23dd012efeb83cbc1bf37abdc)

fixes #3960 - wrap APIv2 errors in an "error" node

(cherry picked from commit 0f7d219a4a65cd795eecd05117b08511d9025de2)

fixes #4152 - fix syntax error in _form.html.erb for hosts and hostgroups

(cherry picked from commit 378c65e5af8ff131ae1701c78934d6bbd0a055e9)

fixes #3920 - prevent 500 ScopedSearch errors on the API, raise UI errors correctly

(cherry picked from commit f9bc5a8e5934aac9bd8d5488f84717d33e359501)

fixes #3760 - API v2 define metadata @total for each controller

(cherry picked from commit 6f9438866488180e196ff18e1372cf0773afe7b9)

Conflicts:
foreman.spec

fixes #4023 - API v2 - compute resources partials should should attribute alias names and not database column names

(cherry picked from commit 8a0ffcfaa900079d628253ee7f9de2feec182914)

fixes #3998 - API v2 error on /api/compute_resources, missing gce.json.rabl

(cherry picked from commit 9926d4d3f87e439d2eaa36f5d54b07d71c57c3fe)

fixes #3940 - extlogout page layout fixed

(cherry picked from commit b4b12197e4ffecfe97b14f3ecd5631b26ebd9489)

templates - sync from community-templates