communicate with the fsac server

Sublime and the fsac server can communicate asynchronously.

This is the basic framework to enable said communication; no
really useful functionality has been yet implemented.

In order for the new code to work, fsautocomplete should be copied
under ./fsac/fsac/. Binaries are not included.
add ability to navigate to top-level declarations
refactor: move files around
create Editor class to hold editor data
delete files
add helper func
add code to manage F# projects
refactor editor code
add events to keep the editor context and files in sync
Merge pull request #814 from my-personal-forks/new-server-for-fsac

Sublime Text: Working integration with fsautocomplete