[FIX] Fix doxygen issues

Change-Id: Ie8d9f918beab845d3f8a6ffdb3e139445e7c3baa
Reviewed-on: http://brateggevoat1/gerrit/1322
Tested-by: Jenkins <jenkins@brateggevoat1.br-automation.co.at>
Reviewed-by: Joerg Zelenka <joerg.zelenka@br-automation.com>
Reviewed-by: Josef Baumgartner <josef.baumgartner@br-automation.com>
[FIX] Fix issue with misssing images in doxygen documentation

Add image directory to the IMAGE_PATH and reference images with the \ref
tag. This ensures that the images will be moved into the html output directory.

Change-Id: I44ba330e571de78fddbdaf28faafc04620d8c373
Reviewed-on: http://brateggevoat1/gerrit/1324
Tested-by: Jenkins <jenkins@brateggevoat1.br-automation.co.at>
Reviewed-by: Josef Baumgartner <josef.baumgartner@br-automation.com>
[TASK] Remove dllcal and errhndcal shared buffer implementations

Remove shared buffer implementation of dllcal and errhndcal
as they are no longer used.

Change-Id: I1b5135bae2bb359c4688d92367f83b6aab7101b9
Reviewed-on: http://brateggevoat1/gerrit/1327
Tested-by: Jenkins <jenkins@brateggevoat1.br-automation.co.at>
Reviewed-by: Josef Baumgartner <josef.baumgartner@br-automation.com>
[FIX] Add missing 'break' in demo_mn_qt

Change-Id: I2091791eca43ef7ad91e96e20b39147e255147cb
Reviewed-on: http://brateggevoat1/gerrit/1321
Tested-by: Jenkins <jenkins@brateggevoat1.br-automation.co.at>
Reviewed-by: Josef Baumgartner <josef.baumgartner@br-automation.com>
[FIX] MN/CN demo apps: Improve state change output

Change-Id: Ib198037a70aad70f3c68364736a53f548aa28bf0
Reviewed-on: http://brateggevoat1/gerrit/1326
Tested-by: Jenkins <jenkins@brateggevoat1.br-automation.co.at>
Reviewed-by: Josef Baumgartner <josef.baumgartner@br-automation.com>