Changed the .gitlab-ci.yml structure

Beginned with new building system
.gitlab-ci.yml can now be generated by the script assemble-gitlab-ci.py.

Therefore the .gitlab-ci.yml configuration file can be split into several smaller files

CI/gitlab-ci/linux-template-build-job.yml

@@ -0,0 +1,14 @@
+#-----------  Job Informations:
+# Type:       Build: {{BUILDTYPE}}
+# OS:         Linux
+# Compiler:   {{COMPILER}}
+# Language:   {{LANGUAGE}}
+
+build-{{BUILDTYPE}}-{{COMPILER}}-{{LANGUAGE}}:
+  stage: build
+  script: "CI/ci-linux-build.sh {{COMPILER}} {{LANGUAGE}} {{BUILDTYPE}}"
+  image: graphics.rwth-aachen.de:4567/docker/docker/docker-openmesh-container
+  tags: [Docker]
+  artifacts:
+    paths:
+    - build-{{COMPILER}}-{{LANGUAGE}}-{{BUILDTYPE}}-Vector-Checks/