Modified for Teleport PrefPane (OS X)

- removed references to Synergy --> replaced with references to Teleport (teleportd)
- changed text encoding to UTF-8 - when editing many text errors were seen making it difficult to modify
- added a process check --> with "grep"ing grep action --> exits script if already running
- added checkbox status check - if teleport is on, no changes are made (added just as a precaution)
- added a "return to previous pane" action if System Preferences was already running