1. Modify @tele and enable for all players, as per our discussions.
 Players must obtain the gate crystals, GMs are not subject to this check.

2. Fixed an issue in @givels that could occur because of Linkshell icon nameflag being unaccounted for
 (when I tested before, my test char had no LS..) and also corrected typos

3. restore lost code in luautils...

4. Add command @toggleassistant so Assistant characters can turn off/on their flag at will.