[*] Fixed compatibility with E-4, incompatible with E-3

Signed-off-by: Stephan Wahlbrink <sw@wahlbrink.eu>
[UI-Util] Fixed resource leak in HandlerContributionItem

Signed-off-by: Stephan Wahlbrink <sw@wahlbrink.eu>
[UI-Components] Fixed enablement in handlers of history util on E-4

Signed-off-by: Stephan Wahlbrink <sw@wahlbrink.eu>
Merged branch 'master' into 'r-1.4.x_E-3.8'

Signed-off-by: Stephan Wahlbrink <sw@wahlbrink.eu>
[Mvn] Updated build configuration
  - Updated to Tycho-0.18
  - Changed spec of encoding

Signed-off-by: Stephan Wahlbrink <sw@wahlbrink.eu>
[Releng] Fixed license url for features

Signed-off-by: Stephan Wahlbrink <sw@wahlbrink.eu>
Merged branch 'master' into 'r-1.4.x_E-3.8'

[Mvn] Updated build configuration
  - Updated to Tycho-0.18
  - Changed spec of encoding

[Releng] Fixed license url for features

Signed-off-by: Stephan Wahlbrink <sw@wahlbrink.eu>