WIP: Early draft of an add new grid form
Tech debt: Added unit test framework based on perl prove. So far only one module is being tested, but expansion should be straightforwards now.
tech debt: added unit tests for module: BooleanStrings
tech debt: Refactored homepage controller out into it's own module which we can delegate to (or abdicate to) from WebApplication. Should make code easier to find, debug and read
tech debt: Refactor of env_controller into it's own Controller module
tech debt: Refactor of new_grid_controller into it's own Controller module