switch to mythtv 0.28
do not wait between executing the actions.

This was originally meant to let me see what's going on during timer
execution, but it is quite annoying while watching a show..
Fix typo in methodname.
change the timestring to edit depending on the timertype

For "One Shot" timers show the full date in the editbox since the date is
relevant. For reoccurring timers the date has no effect on the execution
time and thus does not need to bee editable.