add a marker in call input field where autosend starts
fix display of autostart
change autosend function

- new implementation calculates the expected time to send the call
  from cw speed and switches to sending exchange after that time is reached
progress indicatorn added

- A progress indicator shows the characters already sent.
fix wrong position of attribute modification
refactor highlighting and fix man page
fix typo
Merge branch 'autosend' into master