add project manager and coordinator jobs
Merge pull request #247 from erinspace/jobs

add project manager and coordinator jobs
Merge branch 'master' of https://github.com/CenterForOpenScience/centerforopenscience.org into staging
Merge branch 'jobs_hover' of https://github.com/KatyCain526/centerforopenscience.org into jobs_hover
change homepage header stylization
some css changes for hover images
Merge branch 'communities-addition' of https://github.com/jlcohoon/centerforopenscience.org into jobs_hover
Merge branch 'jobs_hover' of https://github.com/KatyCain526/centerforopenscience.org into jobs_hover

Conflicts:
	www/involved_jobs.mako
	www/static/css/custom.css
Made the changing images into circles
Jobs page changes