Feature: Hiding and Re-ordering functions

[pi0neerpat]

Use-case: You are sending a OneClickdApp to someone who isn't completely tech savvy. To simplify things, you want to show them only 2 or 3 of the most import functions they will be using, and hide the rest.

Implementation: Upon creation, display a preview of how the dApp will look, and allow reordering functions and a toggle switch for hiding functions. Once deployed, the selected functions are hidden by default and can be exposed by clicking "show hidden functions" button.