Restructured all general topics
Removed FuelWeb from docs
removed the 0000-introduction.rst file as deprecated
Added MySQL/Pacemaker troubleshooting faq section
Added RHOS section
Added RHN channel failure note
Merge branch 'fuel-3.1-restruct' of github.com:paly-ch/fuel-docs into fuel-3.1

Conflicts:
	0000-introduction.rst
	pages/installation-fuel-ui/red_hat_openstack.rst