Remove 'Non-VM File Space' chart from datastore C&U

https://bugzilla.redhat.com/show_bug.cgi?id=1123516
Use AR relations to save fields/inputs and values

Instead of saving/destroying fields/inputs and values one at time
Use the Active Record relations to save these with a single save
call on the parent. This is done by adding the :autosave to the has_many
relations

It also includes the removal of to_i calls on the id fields. This will
help us when we switch to GIT and have strings as id's and the to_i
calls would fail. the to_i has been changed to to_s
Added gettext calls into PXE view
fixed formatting issue in catalog add/edit popup
Added gettext calls into configuration view

Also rewritten some files from ERB to HAML
Changes to show tag category only once for each base class.

- Changed TAG_CLASSES to be a hash and then use invert on it in order to use each model only once to add tag categories for them, having base class more than once in that array was causing duplicate entries in the pull down.
- Added spec test for model_details method to make sure values in the pull down are uniq.

https://bugzilla.redhat.com/show_bug.cgi?id=1160209
Disable report download buttons when no records are available

https://bugzilla.redhat.com/show_bug.cgi?id=1160486
use the Rails 4 API for disabling transactions

this depends on manageiq/rails#13
Bump rails gem for disabling transactions in migrations.
Add models for cloud orchestration
Merge pull request #1041 from mzazrivec/disable_report_download_buttons_when_no_records

Disable report download buttons when no records are available
fix internet explorer and sslv3

this still disabled sslv3, but in a more internet explorer friendly way

[skip ci] [ci skip]

https://bugzilla.redhat.com/show_bug.cgi?id=1159378
Merge pull request #1045 from kbrock/sslv3_disabled_take2

fix internet explorer and sslv3
Merge pull request #1039 from tenderlove/migration-txns

use the Rails 4 API for disabling transactions
Merge pull request #988 from jzigmund/bz_chart_datastore_blank

Remove 'Non-VM File Space' chart from datastore C&U
Merge pull request #979 from skateman/gettext-configuration

Added gettext calls into configuration view
Cleanup credentials for RHN partial.
Cleanup email password partial.
Do not pass SMTP password to HTML form.
Do not pass DB password to HTML form.