#1 improved editing functions

[Jan-Torsten Milde]

To efficiently edit partitures, the following editing
commands are needed (at least):

single layer commands

- split
- join
- left border to previous
- right border to next
- fill interval

- moving events with keyboard
- resizing events with keyboard

- copy/paste content

multiple layer commands

- align left
- align reight
- align complete layer

[Fabian Behrens]

Logged In: YES
user_id=1309481

The Eclipse-Annotator now supports:

- split (duplicates content)
multiple events can be selected, each of them
will be split

- join (merges content)
two or more events on the same layer must be
selected

- expand left/right
any number of events on different layers can be
selected
action can only be performed if there is another event
left/right of selected event

- fill interval
exactly two events on one layer must be selected
(this may be changed in a future version)

- resizing events (buggy)
ctrl+l for left border
ctrl+r for right border
enter to accept, esc to cancel

- moving events (buggy)
ctrl+c for move center

- align left/right
at least two events must be selected
this probably only makes sense when two events
on two different layers are selected

all the above functions are undoable.

copy/paste content and align complete layer are still missing.