Added new tests for some ExpectedCondition util.

Added new tests for some ExpectedCondition util and added the ExpectedConditionsTest to the selenium test execution.
Added tests for following ExpectedConditions class method:
- visibilityOfAllElementsLocatedBy
- visibilityOfAllElements
- visibilityOf
- textToBePresentInElementLocated
- elementSelectionStateToBe
List<WebElement> els = Lists.of(mockElement)

We already know they're web elements because of the strong typing.