Added prompt keyword to msg() method. Inspired by code by titeuf87 in #543.
Added prompt functionality to webclient using the msg 'prompt' keyword functionality
Fixed so the look command is called immediately when connecting also on MULTISESSION_MODE=3
Fixed bug in CmdExamine for multisession_mode=3. Resolves #544.
Merge branch 'master' of https://github.com/evennia/evennia into FRPI