Draft: Resolve "[TCC planning] Frontend is incredibly slow with large amounts of entries"

Closes #49

changed milestone to /AlekSIS%"[NLnet #1 (closed)] Fix existing bugs with new timetable"

added part::frontend label

assigned to @yuha

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• ff61c3ba - Allow for including courses of child groups in TCC raster

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• df4de0b6 - Add loading indicators
• e1720c32 - Set fixed width in TCC raster

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• ee9165da - Compute group combinations more efficiently and without duplicates

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• d454ea9e - Fix subject resolving mechanism
• 00139d24 - Make header generation mechanism more efficient

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• 4c12d985 - Reformat

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• f222ea86 - Some optimisations in frontend
• 6cae2deb - Reformat

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@hansegucker could you have a look what else could be optimised?

I am not sure. How fast is this currently?

Not fast enough to be really nice to use with a realistic dataset, at least. Initial loading took some seconds with the site being unresponsive; and changing values causes some stuttering. Could you maybe try it out?

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• 53a38d26 - Move filtering of TCCs for ValidityRange to backend

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• 63f7bd9b - Add optional course group creation
• 8439c05c - Reformat
• 447dd161 - Set parent groups when creating course group
• 4bb59c5b - Use preference for course group group type
• e747f66f - Make adding of group members to course groups configurable
• 8a10b823 - Change preference comment wording
• f510699c - Set both name and shortname on newly created course groups
• 80a427a9 - Merge branch '47-tcc-planning-add-option-to-create-course-groups' into...

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• 303ce99e - Move course name generation to backend

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• d4a3d428 - Reformat

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changed milestone to /AlekSIS%"[NLnet #7] Speed up and finish planning feature for lesson distribution"

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• d4a3d428...90605579 - 241 commits from branch master
• 7ef331fa - Merge branch 'master' into 49-tcc-planning-frontend-is-incredibly-slow-with-large-amounts-of-groups

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added 6 commits

• cbccc175 - Use active school term for filtering TCCs
• 340ab9f3 - Remove sending of school term when creating courses in TCC raster
• ab4c4d61 - Remove unused copy from last VR button
• 13f2a005 - Remove unneeded imports
• 77f05c6e - Auto-create TCC when using course pöanning feature
• 6b87f2ac - Set translated default label for VR field

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• 4ac86f4f - Avoid refetch after saving by updating subjects cache with results

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• 68f8d4b2 - WIP: Autosave

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• 333c55fc - Implement TCC raster autosave

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