Bug 996019 - fix browser_bug435325.js to not connect to example.com; r=ehsan
Bug 996031 - remove 455407.html crashtest; r=dholbert

The bug that this test was intended to test seems transient, according to
testing with nightlies around the time the bug was filed.  Additionally,
the test connects to external servers, which is frowned upon and will soon
be forbidden.
Bug 995995 - set testing prefs to redirect to the test proxy server for RSS feeds; r=jmaher
Bug 997291 - remove write-only gInspectee variables from devtools server tests; r=jmaher