Add bzbug to content view delete test

This feature is under development and the test should be implemented
when the feature is ready.
Added new 'stubbed' decorator for stubbed tests.

Right now, in order to skip tests that have been 'stubbed' and don't
have any code implementing it, we have to import unittest, the
NOT_IMPLEMENTED constant and deal with unittest x unittest2 imports,
which is messy and duplicated in many places.

Instead I propose the creation of this 'stubbed' decorator to simplify
the process described above. If merged I'll create a separate PR (or
amend this one is desired) so that all existing tests are refactored.
Merge pull request #621 from omaciel/issue-618

Added new 'stubbed' decorator for stubbed tests.
Merge pull request #619 from elyezer/ui-contentviews-deletion-tests

Add bzbug to content view delete test
Swapping out xunitmp plugin for a patched version
blocked repo_discovery tests with bz decorator
automated redmine issue 4443
Merge pull request #623 from sghai/block-gpgkey-test

blocked repo_discovery tests with bz decorator
negative create/update activation-key tests
incorporated review comments
bz1078866 automated
Merge pull request #624 from sghai/redmine-issue

Auto-completion of organization search by name
pep8 fix, fixed call of static methods, renamed var. x
changing to git+https
Improve wait_for_ajax method

wait_for_ajax waits for jQuery and AngularJS ajax requests
Update create content views

Update create content views to take advantage of the new version of
wait_for_ajax
Merge pull request #626 from elyezer/wait-for-ajax-improvements

Wait for ajax improvements
Remove sleep_for_seconds from tests

Also add wait_for_ajax on UI methods
Merge pull request #627 from elyezer/remove-sleep-from-tests

Remove sleep_for_seconds from tests
Merge pull request #622 from blrm/xunitmp-fix

Workaround for broken nose_xunitmp