Add hpc access management menu to navbar

[cc-a]

Description

Adds a navbar item to Coldfront providing links related to the group membership functionality. Also adds a simple check_access view available for all users to report their current access status to HPC resources.

To test this branch you must use the navbar branch of imperialcollegelondon/coldfront_development_environment. This uses a bit of a hack to implement this functionality in the hopes that we can get proper support for doing this later. I have ubccr/coldfront#635 open to try and get upstream support for this.

Fixes # (issue)

Type of change

• Documentation (non-breaking change that adds or improves the documentation)
• New feature (non-breaking change which adds functionality)
• Optimization (non-breaking, back-end change that speeds up the code)
• Bug fix (non-breaking change which fixes an issue)
• Breaking change (whatever its nature)

Key checklist

• All tests pass (eg. python -m pytest)
• The documentation builds and looks OK (eg. python -m sphinx -b html docs docs/build)
• Pre-commit hooks run successfully (eg. pre-commit run --all-files)

Further checks

• Code is commented, particularly in hard-to-understand areas
• Tests added or an issue has been opened to tackle that in the future. (Indicate issue here: # (issue))

[AdrianDAlessandro]

Nice! After I realised I needed to re-build the docker image to include the changes in the other repo, this worked as expected!

Do we need a test for the check_access view?

[cc-a]

@AdrianDAlessandro I will add a test in #54 after merging this.