allow testing of ios71 in test.sh, and pass specific versions
make sure we don't error out of pref setting too soon (HT @sebv)
make sure caps are sanitized (fix #2103)
unquarantine toggle tests. they're not too flakey.. maybe
fix window handling in safari, needed to use new context logic
cc @imurchie
if we can't find multiple webviews for clickWebCoords, just use whichever one is there (fix #1940)
Merge pull request #2115 from jlipps/master

misc fixes