(#16429) Fix relative URLs of icons in tables.css

These links work when puppet-dashboard is at the top level because browsers treat /../ as equivalent to /.
(#16429) fix relative links in application.scss

With corresponding generated changes in application.css
(#16429) use a controller reference for the delayed jobs link

This gets the path right even when the app is hosted at a sub-URI.
A basic test of the page looks for the link.
(#16429) use correct links for radiator, too
Travis for master branch.
(#17901) Fix failing tests
Merge pull request #122 from djmitche/relpaths

(#16429) Relpaths
Merge pull request #157 from fhrbek/spec_fixes

(#17901) Fix failing tests
Merge pull request #156 from sodabrew/travis-master

Travis for master branch
Issue 11760: Remove unused Services view.
Bug fix: inherited_resources using deprecated {{mustache}} syntax instead of %{newer} syntax
Spec fix to 04b4c0f use should be_any instead of array indexing.
Merge pull request #154 from sodabrew/patch-7

Bug fix: inherited_resources using deprecated {{mustache}} syntax
Merge pull request #160 from sodabrew/patch-8

Spec fix use 'should be_any' instead of array indexing
Merge pull request #158 from sodabrew/remove_views_services

Issue 11760: Remove unused Services view
Merge branch '1.2rc'
Add addgroup, addclass, listgroups, listclasses tasks for nodes

Previously if a user wanted to use rake tasks to interrogate the dashboard
about which groups or classes a node belonged to, they would be out of luck.
Similarly, if a user wanted to add a class or group to a node without replacing
the already assigned classes/groups of a node it was not possible via only
rake. This commit adds a task in the node namespace to add a group or groups to
a node and to add a class or classes to a node. The other two tasks added here
list out the groups or classes already assigned to a node.
Fix descriptions of node tasks to match reality

The descriptions for the node:classes and node:groups tasks are misleading in
that they indicate that the classes and groups of a node can be edited or added
to using the task. The actual tasks will replace, and only replace, the classes
and groups for a node so this commit updates those descriptions to indicate
that.
Add get_node helper method to node.rake

As there was a large quantity of repeated code in the node rake tasks, this
commit adds a helper method to get a node from the name environment variable
and to exit with error if the node doesn't exist or can't be found.
Merge branch '1.2rc'

* 1.2rc:
  Update CHANGELOG for 1.2.19
  Fix for CVE-2013-0155