Minor SeleniumBase updates

Minor SeleniumBase updates (Mostly requirements).

Update Requirements

Updated requirements for setuptools, pytest, and urllib3

PhantomJS upgrade

Upgrading to the latest version of PhantomJS for Docker and Linux runs

Fixing Chromedriver in a Docker shell

Fixing Chromedriver in a Docker shell

Update Python package requirements

Update Python package requirements

jQuery Update

Using the latest version of jQuery and allowing all Javascript content to run when using WebDriver.

Fixing an edge case and always using the latest version of nosetests/pytest

This release is mainly for fixing an edge cage that may occur during the teardown step when running nosetests/pytest. It also makes sure that the latest version of nosetest/pytest is always used during installation.

Refreshing MasterQA

Refreshing MasterQA:
Add the option to set the MasterQA verify delay from the command line.

The verify_delay for MasterQA is the number of seconds to pause the screen before each verify() call creates a pop-up for the manual QA tester. The default is 1.0 seconds, which is set in https://github.com/seleniumbase/SeleniumBase/blob/master/seleniumbase/config/settings.py
This delay gives the manual QA tester time to inspect the page freely without the question pop-up.

Upgrade Requirements

Using the latest versions of setuptools, pytest, and flake8 in the requirements.

Changes to Demo Mode (# highlights set on the command line)

Changing the default value for Demo Mode sleep in order to speed Demo Mode up a little.
Also adding the defaults for the number of highlight animation loops to the settings.py configuration file and the ability to set it from the command line too, using --highlights=NUMBER, which will only take effect during Demo Mode.