[jokosher-devel] Presets patch

["David Corrales" <corrales david gmail com>]

Hey guys. Today, thanks to Elleo I managed to get a patch to fix the presets problems we were having. They are now going to be saved inside ~/.jokosher/presets/effects instead of somewhere in trunk, which fails on system-wide installs. They also have a new filename scheme: instrument - 
name.jpreset or effect - name.jpreset, so make sure to rename your existing presets (if any).
The EffectPresets class now inherits Monitored so it's possible to create observers for it. The signals emitted are "singlePreset" and "chainPreset", when presets are saved/deleted.
I also changed the preset dictionary to better differentiate between single/chain presets. An ascii tree representation of the new dictionary is available inside EffectPresets.
The delete preset buttons are now enabled in the instrument effects and effect settings dialogs.
-David