remove obsolete function from helm stuff
rename helm-mkproject -> project-helm
add helm-do-ag
remove tons of old unused and commented stuff
make mk-proj-guess-alist byte compile, fix src-pattern guess bug
faster tag jumping and completions

- experimented with caching a lot
- created company backend (to be commited)
- made parts of mk-project work without mk-proj-name being active
- fixed bugs related to jumping and completions
company backend for mk-project
tweaked searching org files after save