split common/lib and js unit tests into separate shards

scripts/all-tests.sh

@@ -17,6 +17,8 @@ set -e
 #       - "quality": Run the quality (pep8/pylint) checks
 #       - "lms-unit": Run the LMS Python unit tests
 #       - "cms-unit": Run the CMS Python unit tests
+#       - "js-unit": Run the JavaScript tests
+#       - "commonlib-unit": Run Python unit tests from the common/lib directory
 #       - "commonlib-js-unit": Run the JavaScript tests and the Python unit
 #           tests from the common/lib directory
 #       - "lms-acceptance": Run the acceptance (Selenium/Lettuce) tests for
@@ -113,6 +115,14 @@ END
         paver test_system -s cms --extra_args="--with-flaky" --cov_args="-p"
         ;;
 
+    "commonlib-unit")
+        paver test_lib --extra_args="--with-flaky" --cov_args="-p"
+        ;;
+
+    "js-unit")
+        paver test_js --coverage
+        ;;
+
     "commonlib-js-unit")
         paver test_js --coverage --skip_clean || { EXIT=1; }
         paver test_lib --skip_clean --extra_args="--with-flaky" --cov_args="-p" || { EXIT=1; }