add bob assignment
add pyc files to gitignore
add rna transcription assignment
add wordcount assignment
add python curriculum
use better method for translation in example
add anagram assignment
add beer-song example
add nucleotide-count assignment
add recent assignments to curriculum

forgot beer-song and nucloetide-count earlier
add point-mutations exercise
add phone-number assignment
add grade-school assignment
add robot-name assignment
standardize Python exercise error messages
add etl assignment
add leap year example

this leaves out the monkeypatching bit since it's super ugly/hacky/bad
in Python.
rewrote the initial help text
Addressing issue #346.

This should result in the following order of pending submissions on the
dashboard:

- those that have never received a nit (oldest first)

- those in which some previous iteration received a nit, but this one
  has not (oldest first)

- those in which there is at least one nit on the current iteration
  (newest first)
Fix typo in about/nitpick

Signed-off-by: chatgris <jboyer@af83.com>