Merge tag 'v1.6' into develop

Added:
* JavaUtil.getSimpleFullName()
* PropertiesUtils.fromResource()
* FilesExt.getRelativeFile()
* FilesExt.getRelativePath()
Fixes:
* Updated git flow notes for latest git flow version
Rolling version to 1.7-SNAPSHOT
Added reference to the "jacle-commons do release" Jenkins build
Added FilesExt.append()
Rolling version to 1.7
Updated release notes
Merge branch 'release-1.7'