changed drag down and up coordinates for iphone
Added generics of SeleniumActions to be able to extend base pages and specify MobileActions/AndroidActions/...
Add support in Android API <= 17
Added generics of SeleniumActions

- Removed MobileSeleniumActions. Will use IOSSeleniumActions and AndroidSeleniumActions instead.
Merge remote-tracking branch 'origin/master'
Enabled full reset capability on iOS mobile browser
Fix dragDown
Add 'platform' capability
Increase selenium version to 2.43.1 (2.44 has a bug with using Chrome in a RemoteWebDriver).