added "skip intro" link
Fixes slowness in rebuilding the materialized views. Now running in under half an hour
Created release branch and added date to Changelog
Merge branch 'master' into release-0.3.0

Conflicts:
	public/latex/history.tex
	public/latex/index.tex
Upgrade Rails version to 3.2.15
Merge pull request #96 from unepwcmc/upgrade_rails

Upgrade Rails version to 3.2.15
upgraded exception notification to 4.0.x
Merge pull request #97 from unepwcmc/upgrade_exception_notifier

upgraded exception notification to 4.0.x
Merge branch 'develop' into fix_sandbox_resetting