Various CI-pipeline fixes (#1042)

* Let Gitler produce a changelog for release builds
* Fix bug in publishing release documentation
* Fix bug in labeling documentation
   (now uses tag data for better tracability)
* Update copyright in documentation

Documentation/doxygen.sh

@@ -7,13 +7,7 @@ echo -e "/**\n * @defgroup RaspberryPiGateway Raspberry Pi Gateway\n * @ingroup
 				echo -e "@endverbatim\n@}*/\n" >> configure.h
 
 # Generate version information
-export PROJECTNUMBER=$(
-	if [[ $(git rev-parse --abbrev-ref HEAD) == "master" ]]; then
-		git describe --tags ;
-	else
-		git rev-parse --short HEAD ;
-	fi
-)
+export PROJECTNUMBER=$(git fetch --tags; git describe --tags;)
 
 # Generate any UML diagrams in the code tree that has the proper tags
 export PLANTUML_JAR_PATH=Documentation/plantuml.jar

Documentation/mainpage.dox

@@ -5,7 +5,7 @@ Are you a sketch developer/user, see @ref publics
 
 Are you a core/library developer, see @ref internals
 
-@copyright (C) 2013-2017 Sensnology AB
+@copyright (C) 2013-2018 Sensnology AB
 
 Full contributor list: https://github.com/mysensors/Arduino/graphs/contributors
 */