Updated error handling messages in case of upload failure
Updating parameter name as per MyELT changes
Adding new parameter in login URL as per MyELT changes
Updating files for file-transfer plugin
Adding iOS config files
Updates to use new MyELT login API in iOS
iOS - Load Native login screen when user logs out from MyELT
Adding loader while logging in iOS
Merge branch 'master' into develop-ios

Conflicts:
	www/index.html
	www/js/index.js
Keep MyELT server URL at one place for iOS
iOS - Do not show white screen while login is in progress
Adding isNative parameter to login url for iOS
Merge branch 'develop-ios'