[IZPACK-1173] Make single-instance locking of the installer configurable
Fixed [izpack-user] onSelect/onDeselect elements mandatory for pack in install.xml (thanks to Torsten Stolpmann for the hint
Extract common parent interface for InstallerListener and
UninstallerListener in order to parameterize Class.
projects were still referring to old 5.0.0-rc3-SNAPSHOT
Merge pull request #281 from Helpstone/IZPACK-1175

[IZPACK-1175] Extract common parent interface
Merge pull request #282 from Helpstone/IZPACK-1176

[IZPACK-1176] projects were still referring to old 5.0.0-rc3-SNAPSHOT
Minor correction in bra translation
Merge pull request #284 from danielmelogpi/master

Minor correction in bra translation
Merge pull request #279 from rkrell/IZPACK-1173

[IZPACK-1173] Make single-instance locking of the installer configurable
Allow for lower-case drive letters in TargetPanel directory validation.
Merge pull request #286 from bobrich/master

Allow for lower-case drive letters in TargetPanel directory validation.