permalink: Don't include querystring

Signed-off-by: Carl Helmertz <helmertz@gmail.com>
search: Add simple search based on grep + UNIX tools

Implemented on my local OSX machine where grep --version gives
grep (GNU grep) 2.5.1
and sort --version is
sort (GNU coreutils) 5.93

The 'design' might need an overhaul pretty soon.

Signed-off-by: Carl Helmertz <helmertz@gmail.com>