Added package icons
Fixed class names

git-svn-id: https://thermopower.svn.sourceforge.net/svnroot/thermopower/trunk@231 80daafeb-7430-0410-91d5-8b30b0bbd841
Added duration parameter to ramp generators
Improved some pressure start values

git-svn-id: https://thermopower.svn.sourceforge.net/svnroot/thermopower/trunk@232 80daafeb-7430-0410-91d5-8b30b0bbd841