Fixes #12794 - Defined logic when properties should be sent to server

If hostgroup is not set - always send the parameters.
On hostgroup change - remove inherited parameters from the request, so the values from the hostgroup will take place.
On save - send the values according to the state of the "inherit" button....

i18n - extracting new, pulling from tx

Fixes #12611 - CVE-2015-7518 prevent XSS on host edit form

The host edit forms allowed stored XSS attacks by storing html content
in smart class parameter and smart variable description or inherited
values, which is then passed unescaped to an html-allowing popover....

Fixes #12659 - Fixed "inherit" behavior

Non-inherited attributes are now sent in the form data.

(cherry picked from commit 6f65fd179f07d7106d301dbe90108d00f5f91170)

Fixes #12618 - Now calls for compute attributes are explicit.

Prevents compute attributes from being overwritten unconditionally from
the hostgroup's compute profile.

(cherry picked from commit 19d9e229ebadb9c9488786391e645c98e4c248ea)

Fixes #12660 - adding no-stretch class to host parameters textarea after unhiding the value

(cherry picked from commit 420ab77bc79b31f4e35ffa7be7bf5924bd5bef47)

Fixes #12461 - Compute profile is properly selected.
(cherry picked from commit 95d706426644f40b7ed434d26bf237e643a17a1b)

i18n - extracting new, pulling from tx

Fixes #12424 - Labels in chart legends are aligned to left

(cherry picked from commit f4ebbf18f2028f18bf0f13726290d01b0f84001f)

fixes #12342 - unsaved (new or cloned) hostgroups keep their puppetclasses

Unsaved hostgroups didn't respond correctly to individual_puppetclasses
because that method expects some objects to be saved in the DB. In case
of selecting a new environment, that lead to puppetclasses disappearing....