Ensure that .jenkins-data is in PYTHONPATH

This is required for the daemon to be able to find and load
the dynamically generated workchain modules. For this reason
the directory in which they are written 'polish/workchains'
needs to exist with an init file. We simply add the generated
polish workchain files to the gitignore list

.gitignore

@@ -22,4 +22,4 @@ coverage/
 .coverage
 
 # Files created by Jenkins tests
-.jenkins-data/polish/workchains
+.jenkins-data/polish/workchains/polish*

.travis-data/before_script.sh

@@ -9,8 +9,9 @@ if [ -e ~/.bashrc ] ; then source ~/.bashrc ; fi
 
 if [[ "$TEST_TYPE" == "tests" ]]
 then
-    # Add the .travis-data folder to the python path such that defined workchains can be found by the daemon
+    # Add the .travis-data and .jenkins-data folder to the python path such that defined workchains can be found by the daemon
     export PYTHONPATH=${PYTHONPATH}:${TRAVIS_BUILD_DIR}/.travis-data
+    export PYTHONPATH=${PYTHONPATH}:${TRAVIS_BUILD_DIR}/../.jenkins-data
 
     # Start the daemon for the correct profile
     verdi -p $TEST_AIIDA_BACKEND daemon start