Removed the setTimeout in favour of a tab's ready event. If it is a timing issue, that should fix the problem.
Put our python libraries first in the path to override any system installed mozrunner.
Merge pull request #716 from Mossop/bug719206

Bug 719206 - Put our python libraries first in the path to override any system installed mozrunner. r=jhammel
fix for bug 827614 - FAIL: test_generate_static_docs (cuddlefish.tests.test_generate.Generate_Docs_Tests); r=@mossop
Merge pull request #712 from ZER0/selection-test-failed/824115

Bug 824115 - error: addon-sdk: TEST FAILED: test-selection.test Selection Listener on document reload