The checkbox "Optional" was not re-enabled after deactivation (e.g.
after selecting a feature alternative which cannot be declared
optional).

Issue-ref: 4288
Issue-Url: af3#4288



Signed-off-by: Andreas Bayha <bayha@fortiss.org>

Issue-ref: 4307
Issue-URL: af3#4307

Signed-off-by: Andreas Bayha <bayha@fortiss.org>

Issue-Ref: 4276
Issue-Url: af3#4276

Signed-off-by: Andreas Bayha <bayha@fortiss.org>

Issue-Ref: 3862
Issue-Url: af3#3862



Signed-off-by: Sebastian Bergemann <bergemann@fortiss.org>

Issue-ref: 3862
Issue-URL: af3#3862

Signed-off-by: Andreas Bayha <bayha@fortiss.org>

Issue-Ref: 4244
Issue-Url: #4244

Signed-off-by: Tiziano Munaro <munaro@fortiss.org>

Issue-Ref: 3862
Issue-Url: af3#3862



Signed-off-by: Sebastian Bergemann <bergemann@fortiss.org>

Variability is now available without export mode.

Issue-Ref: 4244
Issue-Url: af3#4244

Signed-off-by: Andreas Bayha <bayha@fortiss.org>

Issue-Ref: 4229
Issue-Url: af3#4229

Signed-off-by: Andreas Bayha <bayha@fortiss.org>

Issue-Ref: 3776
Issue-Url: af3#3776

Signed-off-by: Andreas Bayha <bayha@fortiss.org>