2) Fixed missing logic of partition from primary_key.js and unique_constraint.js as this two files are newly created for webpack.
3) Changed the node name from 'check_constraint' to 'check_constraints'. Also changed the same in test case url.
This significantly speeds up loading of the application; in an average of 3 tests, v1.6
loaded in 11.5s in the runtime on a Mac, whilst the webpacked version of the code
loaded in 5.53s.