merge commit
Fix for TestHome.test_addons_author_link
This tests fails sporadically on Jenkins and it contains native
events.
I updated the locator since I suspect it's a hover issue.
Merge branch 'master' of https://github.com/mozilla/Addon-Tests
Merge branch 'master' of https://github.com/mozilla/Addon-Tests
Fix for flaky TestDetails.test_what_is_this_in_the_version_information
Merge pull request #573 from teodosia/fix-vers-info

Fix vers info
Made locator more accurate - Attempt to fix the sporadic fail:
tests.desktop.test_search.TestSearch.test_that_searching_for_a_tag_returns_results
Merge pull request #574 from AlinT/attempt_to_fix_sporadic_fail

Made locator more accurate - Attempt to fix the sporadic fail:
Bumping Firebug version r=bustage
Sorting by most users is broken
https://bugzilla.mozilla.org/show_bug.cgi?id=819910
[dev]Sorting by weekly downloads is broken
https://bugzilla.mozilla.org/show_bug.cgi?id=819911
Merge pull request #576 from AlinT/bug_819911

[dev]Sorting by weekly downloads is broken
Merge pull request #575 from AlinT/bug_819910

Sorting by most users is broken
Attempt to fix sporadic amo.dev.mac fail
Merge pull request #577 from AlinT/attempt_to_fix_mac_sporadic_fail

Attempt to fix sporadic amo.dev.mac fail
Xfail 2 paypal tests
https://bugzilla.mozilla.org/show_bug.cgi?id=820407 - [dev] 'Make Contribution' button doesn't load PayPal frame
Merge pull request #578 from teodosia/xfail-paypal-contribute

Xfail 2 paypal tests
Un-xfailing PayPal; bug 820407 WFM.
removing xfails for sorting, from bug 819910
Fix indent in test_search