Fix link_text clicking bug

Fix link_text clicking bug

Added proxy server option, advanced multithreading, and more.

Highlights:

• Added a command line option to set a proxy server for tests to use.
• Upgraded pytest & ipython versions. Added pytest-xdist.
• Removed PhantomJS references due to SeleniumHQ dropping support.
• Added "deprecated" decorator.
• Test-logging now on by default.
• New naming system for the delayed_assert methods. (Old methods are now deprecated).
• Added thread-safe handling of log files for multithreaded test runs.

Adding new features and improving on older ones.

• Upgrading to use selenium==3.8.1
• Advanced handling of dropdown menu clicks
• Adding methods for page object manipulation
• Updating boilerplates
• Adding methods for handling iFrames better
• Simplifying some methods

Better error handling

Better error handling

Small updates

Small updates:
Updated some exception-handling.
Updated some timing.
Updated some ReadMe files.

Settings page overhaul

Updating the settings page.
Updating installation instructions.

Adding methods for testing analytics software

Adding methods for testing analytics software:

It's easy to use JavaScript to create a referral link to any page from any page. This generates real referral traffic for testing analytics software.

Compatibility with selenium 2

Compatibility with selenium 2

Improve Reliability

Improve Test Reliability
Better exception handling.
Update default timeouts.
Use flake8==3.5.0

Simplify all the things

You no longer need to add "--with-selenium" on the command line when running tests.
The Selenium Grid integration is now easier to use.
Can set Selenium Grid server and port at runtime. (Ex: --server="127.0.0.1" --port=4444)
The ElementNotInteractableException is handled gracefully. (More time given to load)
Automatically wait for AngularJS to finish loading in pages by default.
Upgraded SeleniumBase to use setuptools version 38.5.1