Merge pull request #334 from kylejohnson/release-1.27

Fix popup sizes in flat skins.  Fixes #331
Update README.md
Update README.md
Create a hardened build per Fedora packaging guidelines
Need to make httpd a build requirement for cmake builds so the apache user can be properly auto-detected
Make httpd both an install and build requirement
further refinement of build requirements
Merge branch 'release-1.27' of github.com:ZoneMinder/ZoneMinder into release-1.27