fixes #5609 - backport bugfix in hosts form when location is nil

This commit fixes a bug that has been fixed in
acfbc45886c4d81a2a3ca5af433a6124a0a7191a

fixes #4456 - XSS on 500 error page and bookmark name causing render error (CVE-2014-0089)

(cherry picked from commit 69e46d6d6eb230f3aa4236838999284dfffccb6e)

fixes #4194, #4459 - add main_app to root_path references for isolated engines

(cherry picked from commit 33b384f2b29363014608ac1b85061b5a8b4791d5)

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

(cherry picked from commit 19579f872c1b4a512500f8e07f0b066180574e4e)

fixes #3567 Editing an oVirt compute resource can throw errors loading quotas while loading page

(cherry picked from commit 2e66b04a2c92bc40fea1bfdc7f0414435754f49b)

fixes #4159 Thin provisioning for VMware disks in compute profiles can't be saved

(cherry picked from commit 2058a91d5effb143a66f5677d6882cba4a9258ae)

fixes #3496 vSphere: add support for selectable SCSI controller

(cherry picked from commit 41ee835f2c872d09cd09af2179ef3bc2327e6b02)

fixes #3980 - Compute profiles not rendering Openstack attributes correctly

(cherry picked from commit 88daf556e39ad9c0d3bdebbe9f88ce5ff49010f6)

fixes #4220 dashboard and report-show pages chart-frame is not in place.

(cherry picked from commit cbce647fa4d83b5ea4f5a5d35313914811a4e891)

templates - sync from community-templates

(cherry picked from commit 6d755dd05f00a7f52b7bb3f791438b688ce54ba7)