some hp updates
add ambassador images
Merge branch 'master' of http://github.com/katycain526/centerforopenscience.org into communities-addition

# By Katy Cain
# Via Katy Cain
* 'master' of http://github.com/katycain526/centerforopenscience.org:
  SEO: title and description updates

Conflicts:
	www/index.mako
	www/involved_opportunities.mako
updates partners and bold opportunities
TroWMerge commit 'b15b5b80a2edc339defca4201892b6d46c521ed4'

Conflicts:
	www/about_partners.mako
	www/involved_opportunities.mako
	www/static/css/custom.css