Updated version to 1.3.2
configure build-helper-maven-plugin in parent pom
Mars target platforms
445948: Exception loading persisted MarketplaceInfo (err_grp: 0ac93c6e)

- load errors logged as warning
- better log message
- tests and some refactorings to improve testability

Bug: 445948
Task-Url: https://bugs.eclipse.org/bugs/show_bug.cgi?id=445948
446047: Don't pollute user home with mpc state directory

- use .eclipse/mpc instead of .eclipse_mpc
- use legacy location as fallback
- tests

Bug: 446047
446071: org.eclipse.epp.mpc.core should be a singleton

- marked org.eclipse.epp.mpc.core as singleton
 
Bug: 446071
Task-Url: https://bugs.eclipse.org/bugs/show_bug.cgi?id=446071
Don't ignore exceptions.

Signed-off-by: Timo Kinnunen <timo.kinnunen@gmail.com>