Enable 24.5+ ESR release notes-- fix bug 1001238

Modify query logic in bedrock.firefox.views.get_release_or_404 to
handle ESR product

Map 24.[5678].\d releasenotes and system-requirements to bedrock
in etc/apache/global.conf
Merge pull request #1917 from jgmize/bedrock-esr-24.5+releasenotes

Enable 24.5+ ESR release notes-- fix bug 1001238