Adds 'fill' and 'clear' actions
Merge branch 'pmaster'

Conflicts:
	pyfunct/contrib/splinter_driver.py
Implements fill and clear actions in browsers.py
Adds tests for clear and fill actions.
Shortens the name of 'test_action_with_not_found_element'.

I believe the new name is easier to read. Moreover, it is shorter.
Merge pull request #4 from vicentealencar/master

Adds 'fill' and 'clear' actions