Adding dev sprints to schedule page.

To alleviate some confusion that I've seen out there about why the schedule
page only lists the 9th-11th when the front page says the conference runs
from the 9th to the 13th, I'd added some of the text from last year (from
PyCon US originally, I think?) to the stub page for the conference schedule.

In the longer term, this info should likely move to a more permanent home,
like a dedicated "sprints" page -- but the dates should still be on the
schedule along with some basic info.
Merge pull request #64 from felixc/add-sprints-to-schedule

Adding dev sprints to schedule page.
Make i18n for the schedule conference info on sprints
Make the nav li width a percentage of row width, so that the French nav titles won't overflow
hmm, not a good fix. Revert it back until better solution
Spaces out the sponsors on the sponsor list page some more.
Increase the size of sponsor logos.
The hotel reservation code does not have a space in it. Also updates the venue page translations to use PLACEHOLDER_NAMES for the text blocks.
Provides more descriptive error when you provide more than the specified number of words for a sponsor text description.
why not put the getting started stuff in the README in the root directory?
add readme step to go back to project root directory
shell expansion lulz
Merge pull request #66 from pyconca/readme-update

docs/getting_started.rst -> README.md
adding design credit to Ritchie Cheung to footer
start adding featured speakers
fixing the last <p> of the code of conduct
Adding deploy instructions to README
Resizing picture of Karen
s/jpp/jpg
Resizing Jacob's picture