Cleanup admins

Cleans up the AdminController, AdminService, FirstYearStudent, and FirstYearMentorGroup classes with documentation and RoomCreate and RoomPatch DTOs. Changes the HTML for editing rooms to look a little cleaner.

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added 20 commits

• db20aa2c...cbf03d57 - 18 commits from branch development
• 4d319210 - Clean up AdminController and apply new conventions
• 66e794f1 - Cleanup rooms/edit page and fix posting rooms

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• dd2c3994 - Clean up AdminService

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• 601cdfd4 - Clean up AdminService

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• a1694a33 - Clean up AdminService

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• 44e3d1b5 - Clean up AdminService

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unmarked as a Work In Progress

added 1 commit

• bf3eec94 - Adjust method signatures for Patch

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added 7 commits

• bf3eec94...e7211160 - 3 commits from branch development
• 02017a0c - Clean up AdminController and apply new conventions
• 3bfbfa92 - Cleanup rooms/edit page and fix posting rooms
• a94387ca - Clean up AdminService
• 9403b611 - Adjust method signatures for Patch

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Looks good; just wondering about the redirects to e.g. /admin/room versus mappings on /room . If correct: still confusing?

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merged

mentioned in commit a9d153f1