ArgumentsBuilder: make SOCKS proxy authorization optional, add null checks if proxy url is set
Fixing issues with "GetFixtureHttpRequestCallback"

This is used by many tests.
Removing flaky (and pointless) test
Support remote class configuration in webdriver mode #310
fix - get platform in runtime
Merge pull request #311 from artkoshelev/remoteproxyclass

Support remote class configuration in webdriver mode #310
fix for HTTP Authentication
fixed session_request_handler to handle POSTs to /file, relying on phantom's page.uploadFile
Merge pull request #322 from tmueller/1.1.0-fix-auth

fix for HTTP Authentication
Formatting "page._additionalPageSettings"
Merge pull request #324 from DocuSignDev/file-upload-fix

fixed session_request_handler to handle POSTs to /file, relying on phantom's page.uploadFile
Merge pull request #304 from kaznovac/master

ArgumentsBuilder: make SOCKS proxy authorization optional, add null checks if proxy url is set