Make executables executable

Two files in this project are intended to be run directly. Make it so.
chatwrapper: Do not simply cross your fingers when sending messages

* Sleep 5 seconds between messages
* When told to wait x seconds, wait 1.5 times as much
  (and then still 5 seconds on success)
* Avoid sending the same message more than once.
Merge branch 'master' into lazers