fix typo running arch nexus instead of bin/nexus
minor fixups

- echo the service redirect URL ( sometimes I want to copy paste this and printing it also makes debugging easier.
- if war key is specified, then groupId must be org.sonatype.nexus - fix this
- comment out the checking for last build is successful, since bamboo is used instead now, haven't made bamboo checking work
pre-commit check script works better when script path is absolute - assume reasonable default location
add better default path override for checklicense.sh script using DH_PATH env var
Merge pull request #17 from peterlynch/upstream-changes

Some minor fixes:
* env path handling
* nexus binary was used from the wrong place
* update war gid