[NEXUS-6043] Merge ItemPathUtils into PathUtils

Signed-off-by: Alin Dreghiciu <adreghiciu@gmail.com>
Merge branch 'master' into NEXUS-6043-merge-path-utils
Merge pull request #241 from sonatype/NEXUS-6043-merge-path-utils

REVIEW: [NEXUS-6043] Merge ItemPathUtils into PathUtils