Core/actions: Bug where the last part of a split message would be sent twice if there were no spaces.

(cherry picked from commit 8776e2045e9942fe6bf06c2ac727026180467772)
Core/actions: Allow splitting of messages on a comma instead of a space.

(cherry picked from commit 9d71636115d1252040236c4f45c2457e3ced2551)
Core/maps: Delete target bookings and scan requests when removing a user.

(cherry picked from commit b6b49e63af2675f04d3f6004b611ad1dcc6d292c)