Add  openHours field to places

so we can specify some informations about opening hours.

Probably not the best solution, but enough to start with and figure out if we need more than that.
Fix #9
optionToHtml now works like optionalValueToHtml

it take a label and a option (boolean + string) and returns the html representation needed to build the marker's popup.
Rename optionalValueToHtml in optionalFieldToHtml
Merge pull request #20 from avernois/issue_9_add_openHours

Add  openHours field to places
Lat and Lon are stored as floats not strings.

So we don't rely on javascript automagic inference/conversion. Probably safer :)

fix #18
add Cyrano in Toulouse
Merge pull request #23 from avernois/toulouse_cyrano

add Cyrano in Toulouse
Update toulouse.json
Add a "contribute ribbon" on upper right corner

Integration of Simon Whitaker ["Fork me on Github" CSS ribbon](https://github.com/simonwhitaker/github-fork-ribbon-css).

fix #3
Merge pull request #24 from avernois/issue_3_contribute

Add a "contribute ribbon" on upper right corner
Added Kowork and Darwin to Bordeaux
Added URLs to places. Added URLs to Bordeaux places