Build ICAT client for autoreduction webapp

[MarcusNoble]

Create a class to act as an ICAT client to be used when getting experiment details, list of experiments a user is associated with and an instrument scientists instruments.

Will need some way of authenticating against ICAT and storing a users session for the duration of requests.

It will also need a "refresh" method that will be called upon each request to ensure the session doesn't expire.

UPDATE: Should use users.facilities.rl.ac.uk/auth as login mechanism (use similar redirect as implemented for ICAT)

User Office sessions can be converted into ICAT session.

For Tester:

1. Connect to datareducedev.isis.cclrc.ac.uk
2. sudo su
3. export PATH="/usr/local/bin:$PATH"
4. python /var/www/autoreduce_webapp/manage.py test autoreduce_webapp.tests.ICATCommunicationTestCase (Note: One test will take longer than the others as it waits for a timeout)
5. When asked for ICAT credentials enter your federal ID credentials

Expected output:

[root@datareducedev autoreduce_webapp]# python /var/www/autoreduce_webapp/manage.py test autoreduce_webapp.tests.ICATCommunicationTestCase
Creating test database for alias 'default'...
..............................
----------------------------------------------------------------------
Ran 30 tests in 88.709s

OK
Destroying test database for alias 'default'...

[Anders Markvardsen]

This is in place. My credentials calles three fails, but this related to my specific limitted permissions within ICAT, which is OK