Migrated to Python3 and added create_ticket() REST functionality

[agaetep]

I only commented out things I changed when change to API based, especially encoding keys/values in create_msg(), just in case that's still necessary. It's my understand that python3 is already encoded though

A few questions I have:

• should the variables when creating the tracker be hard coded like they are now? (line 527)
• when creating the ticket, I set the queue to 'OSLSupport'. I imagine since this is a form submission for a hosting request it will always be the same queue, but not sure if this is the correct one

[agaetep]

The changes I made that allow any queue to be used will require a change in the html files on the pelican site: I changed the send_to value under the "formsender settings" section at the bottom of each html form to directly reflect the queues we already have on RT, since REST API is case sensitive

[ramereth]

@antoniagaete Forgot to mention that we should also clean up conf.py.dist by doing the following:

• Remove any unused options
• Remove the fake secrets for TOKEN and RECAPTCHA_SECRET and comment those out

[ramereth]

@antoniagaete please fix the CI errors