Bring React into the tree, and add linting and bundling framework for the JS etc.

pkg/pip/build.sh

@@ -57,6 +57,15 @@ do
     tar cf - $FILE | (cd ../pip-build/pgadmin4; tar xf -)
 done
 
+yarn install
+yarn run bundle
+
+for FILE in `ls -d pgAdmin/static/js/generated/*`
+do
+    echo Adding $FILE
+    tar cf - $FILE | (cd ../pip-build/pgadmin4; tar xf -)
+done
+
 cd ../docs
 for FILE in `git ls-files`
 do