cleanup ci config

.gitlab-ci.yml

 include:
-  - remote: "https://gitlab.esrf.fr/workflow/ewoks/ewoks/raw/main/.gitlab-ci-template.yml"
+  - remote: https://gitlab.esrf.fr/workflow/ewoks/ewoks/raw/main/.gitlab-ci-template.yml
 
 test-3.6:
-  extends: ".test-3.6_glx"
-  before_script:
-    - export QT_QPA_PLATFORM=offscreen
+  extends: .test-3.6_glx
 
 test-3.6-henri-orange-fork:
-  extends: ".test-3.6_glx"
-  before_script:
-    - export QT_QPA_PLATFORM=offscreen
+  extends: .test-3.6_glx
+  script:
+    - pip install --no-deps .
+    - pip install ewokscore[test]
+    - pip install importlib_resources
     # missing dependencies in the Orange3 fork
-    - pip install numpy scipy PyQt5 silx chardet sklearn
+    #- pip install numpy scipy PyQt5 silx chardet sklearn
     # hard fork of Orange3
     - pip install git+https://github.com/payno/orange3.git
 
 test-3.6-oasys-orange-fork:
-  extends: ".test-3.6_glx"
-  before_script:
-    - export QT_QPA_PLATFORM=offscreen
-    - pip install pytest-cov
-    - pip install --pre .[test]
-    # hard fork of Orange3
-    - pip uninstall orange3 -y
-    - pip uninstall orange-canvas-core -y
-    - pip uninstall orange-widget-base -y
-    - pip install git+https://github.com/oasys-kit/OASYS1.git
+  extends: .test-3.6_glx
   script:
+    - pip install --no-deps .
+    - pip install ewokscore[test]
+    - pip install importlib_resources
+    - pip install git+https://github.com/oasys-kit/OASYS1.git
     - pytest --cov=./ -v .
 
 build_sdist:
-  extends: ".build_sdist"
+  extends: .build_sdist
 
 test_sdist-3.6:
-  extends: ".test_sdist-3.6_glx"
-  before_script:
-    - export QT_QPA_PLATFORM=offscreen
+  extends: .test_sdist-3.6_glx
 
 build_doc:
-  extends: ".build_doc"
+  extends: .build_doc
 
 pages:
-  extends: ".pages"
+  extends: .pages