Script simplified to a single file

Hi Andre,

* I removed the format_path which was left after the last pull request by Victor. 
* I moved the logic from vhdl_parser to vhdl_gen to make everything a single script file and removed vhdl_parser (the reason was that there was no need to to make a little script to just to call another script)
* Some remaining portuguese text was translated

PS: Cleanups will follow!