Adds some text about lightning talks.
Marks strings in speak.html for translation.
Adding lightning talk description
Merge with origin/master
Fixes broken entities on the speak page.
Merge remote-tracking branch 'mtlpy/pyconca2013' into pyconca2013

Conflicts:
	.gitignore
Recompiles symposion fr django.mo.
Fixes two minor typos in the symposion French translation.
Updates symposion_project po files.
Fixes a typo in the fr symposion translation.
Removes dead code from dashboard.html
Applies translation tags to the rest of the dashboard.html content.
Adds translation tags to _proposal_row.html.
Removes redundant README section.
Puts the sponsor name and description into a hover-activated popover. Closes #43.
Adds "Powered By Symposion" to the footer. Closes #72.
Re-adds <p> tags to <li> items, so the formatting looks better.
Makes nav width dynamic, until a media query tells it to become fixed and wrapping (matches when the rest of the UI changes size). Fixes #67.
Adds spaceless tag to homepage sponsors so the links don't cause a trailing 1-space underline when hovered over.
Merge https://github.com/pyconca/2013-web into pyconca2013