Change listfiles filesize to size, size and mtime not user-friendly, use posix.stat over fs.stat, use new format functions

Use mymodule parameter for module definition.
This was also helpful in revealing places where the code relied on the global environment.

Removed controllerfunctions library (still needs more work and corresponding work in model)
Updated startstop functionality and deleted view
Updated for viewfunctions to htmlviewfunctions and modified require statements for acf libraries