`push.default = current` to support git 1.7

stolas is squeeze, squeeze has git 1.7, git 1.7 doesn't support
`upstream` :(
Stop writing to stdout for non-interactive shells

http://bencane.com/2013/09/16/understanding-a-little-more-about-etcprofile-and-etcbashrc/

No more `fortune` in bashrc (called for non-interactive shells); do it
in profile instead (for interactive shells)