Basic robot testing setup added.
Fixed allow-hosts

https://travis-ci.org/#!/plone/plone.app.theming/builds/2775610
Update .travis.yml
Added decorator to test require
Added selenium to test require
theme control panel tests added.
Merge branch 'acceptance-tests' of git://github.com/plone/plone.app.theming into acceptance-tests
Add the variables.py file from plone.act since we don't want to rely on that package yet.
Pep8.
First 3 tests implemented

The following 3 Scenarios are now tested:
Preview theme
Activate theme
Copy theme
Merge branch 'acceptance-tests' of git://github.com/plone/plone.app.theming into acceptance-tests
Test Copy Theme, using second browser for themed page
Test new theme from scratch

Tests added to create a new theme. Second test commented out, since the
newly-created theme does not have the usual login functionality.
Merge branch 'master' into acceptance-tests

Conflicts:
	src/plone/app/theming/testing.py
Updated buildout.cfg
Fixed acceptance tests
pep8
Remove DL's from portal message in templates.
Added support for ++theme++current to traverse to the contents of the current activated theme
Added history entry and removed current traversal, using empty string instead.