Rest API: fix "limit" and "offset" functionality

This is to fix the followig errors:
1. When using 'limit' argument:

    String can't be coerced into Fixnum, klass:TypeError

2. When using 'limit' with the 'offset' argument:

    undefined method `-' for ...:String, klass:NoMethodError
Fixed breadcrumb link for "Services" in Host Summary screen

Ensured that the explorer action gets called for the Services breadcrumb
link.

https://bugzilla.redhat.com/show_bug.cgi?id=1148636
Added gettext calls into vm_* views
Fixed issue - buttons do not light up after a selection is made

This issue was seen in the Provisioning dialog page where despite a
template selection, the Continue button would not light up.

Recent prototype -> jQuery changes exposed this issue (which is an issue
for jQuery, but not for prototype) where if there are multiple elements
in a html page with the same id , for e.g. -
<span id='buttons_on'>
<div id='buttons_on'>
then a jQuery call - $j('#buttons_on') would pick only the first element
, thus introducing a bug where the second element with the same id would
not be handled at all.
On the Provisioning dialog page, the quick_search bar had its own set
of buttons that were causing the above issue with the Provisioning
dialog buttons. The quick_search bar buttons have now been renamed to
quick_search_buttons_on/off to avoid the id clash.
Set the zone if specified in the SOAP request

https://bugzilla.redhat.com/show_bug.cgi?id=1135627

The required zone can be specified in the "parameters" being passed
to CreateAutomationRequest. The attribute name is called miq_zone
Merge pull request #1027 from AparnaKarve/bz1148636_explorer_action_to_service

Fixed breadcrumb link for "Services" in Host Summary screen
MiqWidget.available_for_user should check by both role and group.

https://bugzilla.redhat.com/show_bug.cgi?id=1158636
A widget's resource should be one of MiqReport, RssFeed or null.

So the checking of w.resource == user is not right and should be removed.
https://bugzilla.redhat.com/show_bug.cgi?id=1158636
Merge pull request #914 from mzazrivec/fix_api_limit_and_offset

Rest API: fix "limit" and "offset" functionality
Merge pull request #1034 from AparnaKarve/provisioning_continue_button_disabled

Fixed issue - buttons do not light up after a selection is made in the dialog
Merge pull request #999 from skateman/gettext-vms

Added gettext calls into vm_* views
Merge pull request #1010 from mkanoor/bugzilla_1135627

Set the zone if specified in the SOAP request
Merge pull request #959 from lfu/widget_for_group_1158636

MiqWidget.available_for_user should check by both role and group.