Task templates

[danielk333]

This was quicker to implement then copy-pasting the template for all the dussins of tasks i needed to enter, hence it might be useful. Includes:

• simple implementation using shift+l and shift+s
• uses same functionality as searches

Pros:

• Easy
• Robust
• Can be easily extended to do more fancy stuff, like specify starting location of cursor within the template

Cons:

• Saving of templates is a bit counter-intuitive
• Forgetting a template on can be annoying, but its easy to turn off (3 key presses)

[danielk333]

todo:

• [x] documentation
• [x] increment pter version

[vonshednob]

Please also add the shortcuts to the internal help screen (in do_show_help)

[danielk333]

@vonshednob Fixed stuff during meeting down-time