Clean before build in build.sh

Takes longer but leads to less anger
Add Offline ToureNPlaner export
Use new import path and repository for graphio dep
Merge branch 'master' of github.com:ToureNPlaner/CHConstructor

Conflicts:
	pom.xml
	src/main/java/de/tourenplaner/chconstruction/graphio/GraphReaderNewStandard.java
Do a clean in build.sh
Merge branch 'master' of github.com:ToureNPlaner/CHConstructor

Conflicts:
	build.sh
Add support for meta data and new graph format
Reenable several optimizations/remove double level check
Reenable several optimizations/remove double level check
Merge branch 'standard-format'
Merge remote-tracking branch 'origin/master' into stefans

Conflicts:
	src/main/java/de/tourenplaner/chconstruction/Main.java