Merge gitary-functions back into gitary

- gitary is the only thing that uses these functions. Nothing is shared
  among different programs.
- Finding the correct location of gitary-functions is unnecessarily
  complex.
Remove the "view" alias for "edit"

"view" suggests a "read only view". This is not true. You always edit
that diary entry.
man: Use .TQ instead of fiddling with .PD
Improve commit messages

- Why include the date? It's stored in the commit anyway.
- State that this commit was made by gitary. Makes it easier to
  distinguish from manual commits.
"git add" (kind of) needs "-A" nowadays
Improve quoting