1.4.0

General clean up of imports, templates, and comments

templates:

• page_object.py template now imports all from webdriver_test_tools.pageobject. This way, no additional imports need to be made to use a prototype class. Instead, the class will be referenced using the prototypes module (e.g. prototypes.FormObject). This also makes it clearer where the prototype classes originate from
• Fixed indentation in setup.py template
• Fixed reference to BrowserConfig in BrowserStackConfig docstring