Karaage

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* Handle module strings with // as a separator
* More filtering on software list
* Ensure usage index page is only accessible if allowed
* Other minor bug fixes

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* Fixed out by 1 error when calculating available cpus
* Added memory and core usage reports
* Fixed institute usage permission view
* More sensible redirect after accepting a license
* Added DB index to date field on CPUJob
* Fixed longstanding matplotlib project graph error

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* Institutes now have 0 or many delegates, got rid of active/sub delegates
* Removed deprecated requests app
* Refactor Account datastores. Setting now stored in DB
* Archive applications
* Ability to add/edit machine categories
* Reverse order of applications in admin site
* Set DEFAULT_FROM_EMAIL to be equal to ACCOUNTS_EMAIL
* Added software field to CPUJob
* Added CPU Job detail and list pages
* Send admin notification for pending project applications too
* Ability for an admin to modify an applicant
* Only create a group for a software package if it's restricted or has a license
* New management command to change a users username
* Added software usage statistics views
* Removed is_expertise field from projects
* Made the Send Email function more generic

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* Workaround for long standing matplotlib bug. Don't error
if can't display graph.
* Fixed another SAML_ID unique bug

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* Fixed instutute usage bug

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* Fixed bug in user invite email sending
* Fixed broken decline link in project applications
* Fixed bug in software detail template