Feature Request: Add the application name as a tag to "Submit a ticket" button click

[jones220-purdue]

Additions:

• Created a function named "parse_app_name" that will attempt to retrieve the application name from environment variables TOOLDIR or SUBMIT_APPLICATION_REVISION. If the name cannot be found, then get the application title from $SESSIONDIR/resources
• Added a Python variable for app_name
• Added to the header_template, the Javascript variable appname using the Python value
• Added ?group=app-${appname} to the HREF for the "Submit a ticket" button

Purpose:
The reason behind this change is too add a tag to ticket requests letting developers know what tool the ticket is in reference too. Sometimes ticket submitters omit this information