-Update flow navigation on process creation
Update navigation on change of name in editor
Set amount on 1.0 by default when adding flows to exchange viewer tables
Removed product system viewer (not needed anymore)
Message dialog on delete from navigation
Update editor tab label on change of name
Refactoring of product system graphical editor (not 100% done yet)
Merge remote-tracking branch 'origin/master'

Conflicts:
	olca-app/.classpath
	olca-app/plugin.xml
	olca-app/src/org/openlca/app/editors/actions/ProductSystemActionContributor.java
Corrected merging mistake
Corrected another merging mistake :/
Merge remote-tracking branch 'gdtc/master'

Conflicts:
	olca-app/plugin.xml
	olca-app/src/org/openlca/app/editors/actions/CalculationWizard.java
Merge remote-tracking branch 'gdtc/martintasks' into martintasks

Conflicts:
	olca-app/src/org/openlca/app/editors/ModelEditor.java

also improved delete action