FORGE-1935: checking possible NPEs
FORGE-1935: attached validators are only called if input value is not null
FORGE-1939: Upgrade to Maven 3.2.2 APIs
Fixed potential NPE
[FORGE-1940] forge --help shows two times.
Merge pull request #487 from danielsoro/FORGE-1940

[FORGE-1940] forge --help shows two times.
FORGE-1932: created test as an attempt to reproduce issue
Remove no sense if
Merge pull request #488 from danielsoro/no-sense-if

Removed if no sense.
FORGE-1936: Upgrade to Roaster 2.7.0.Final
Fixed ShellCommandListenerTest
FORGE-1942: Fixed command execution out of context
Improved did you mean message
FORGE-1943: Upgrade to jboss-parent 15
Organized imports
[maven-release-plugin] prepare release 2.7.1.Final
[maven-release-plugin] prepare for next development iteration
Organized imports
Update README.asciidoc
Resources addon is not optional for parser-xml