Removal of vue: work/tfry/reduce_js_dependencies ; this branch is currently still a bit messy/buggy, but considered to be on par with the functionality master, in theory.

This brings down the size of the minimized JS from ~350kB to ~285kB, which I have to admit is less dramatic than I had hoped for, but a significant reduction, nonetheless.

The vast majority of what remains is MSAL. I do wonder, whether we cannot remove that, too, after all: I stumbled over this: https://learn.microsoft.com/en-us/javascript/api/office/office.auth?view=outlook-js-1.15&preserve-view=true#office-office-auth-getaccesstoken-member(1), and wonder, whether we could change our auth mechanism to that (auth would then run "in outlook", rather than the add-in). No, we cannot use that: https://stackoverflow.com/questions/77839961/unable-to-obtain-access-token-using-office-auth-getaccesstoken-in-office-add-in