[SD-231] - Invitation Form cleanup
Closes SD-231
The MR cleans up the remaining code for the president's reception and the hackathon registration and moves away from using forms to the newer ticket add-ons.
Edited by Orestis Athanasopoulos Antoniou
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Closes SD-231
The MR cleans up the remaining code for the president's reception and the hackathon registration and moves away from using forms to the newer ticket add-ons.