Remove Extra CB

* remove extra callback...

Fix #2044
Merge pull request #2054 from dandoveralba/fixcb

Remove Extra CB
fixed find-element tests for ios7
added better error reporting to test helper
Merge pull request #2059 from Jonahss/fixFindTest

Fix find-element tests for ios7
UICatalog fix for 7.1
Merge pull request #2061 from sebv/uicatalog-fix

UICatalog fix for 7.1
added duplicate textfield test
appium-uiauto + appium-instruments upgrade
Merge pull request #2065 from sebv/dup-textfield

Package upgrade + duplicate test.
update appium-uiauto submodule so we can get fix (cc @sebv)