Improve instrument palette.
Add new icons.
Revert the debug changes.
Add new icons.
Add a separator before the palette button.
Make the svg icons white.
Delete rhodes.png and templebell.png, add a templebell svg icon.
Cap the palette width to 5, looks better this way.
Show the full instrument names, even when they are more than 10 characters long.
pep8 fixes.
Show the sort instruments.
Merge branch 'master' into rythms

Conflicts:
	activity.py
Use the drums icon instead of the gear icon in the toolbar.