Some fixes to make alerts work
Ec2 and RHOS catalog item
EC2 and RHOS catalog tests
updated tracer.py for cloud_catalog_item import
removed ec2 catalog item from tracer.py
Regexp-based tree finder
Toolbar sub_loc does an exact text match

This deals with the issue of two very similar
sub menu items resulting in choosing the wrong item.

The specific example that requires this change is two sub menu items, in this order:
- Add a new Button Group
- Add a new Button

"Add a new Button Group" appears first in the DOM, and would always have been
selected, despite "Add a new Button" being the expected choice.

This will break toolbar selects that relied on the previous substring
matching behavior, but being explicit in those cases seems like the better option.
toolbar button fixes
Destroyed ALL THE THINGS
Fixed parallelizer
Merge pull request #978 from psav/art_fix_4

Fixed parallelizer
Merge pull request #976 from psav/destruction

Destroyed ALL THE THINGS
Make artifactor not start riggerlib on import
Merge pull request #979 from psav/art_fix_5

Make artifactor not start riggerlib on import
Fix art reliance
Merge pull request #981 from psav/fix_art_6

Fix art reliance
Support domains on upstream
Use form_buttons, add update method
Merge pull request #956 from weissjeffm/domains

Support domains on upstream
Removed navigation fixtures import