Phase 1 - pass env as -D option + small refactor

Conflicts:
	src/test/java/com/wikia/webdriver/Common/DataProvider/AdsDataProvider.java
	src/test/java/com/wikia/webdriver/Common/DriverProvider/DriverProvider.java
	src/test/java/com/wikia/webdriver/Common/Properties/Properties.java
	src/test/java/com/wikia/webdriver/PageObjectsFactory/PageObject/WikiBasePageObject.java