[Fix #322] Align projectile-find-tag with latest ggtags
Make modeline lighter configurable
* projectile.el (projectile-find-file-in-directory): make directory an optional argument

to make non-interactive calls possible
Merge pull request #338 from tanzoniteblack/modifiable-mode-line

Modifiable mode line
Merge pull request #340 from jtatarik/ff-in-dir-optional-arg

projectile-find-file-in-directory: make directory an optional argument
Default files for projectile-grep with prefix arg