Fix several HTML issues and prettify syntax

According to the markup validation service provided by the W3C there are severl
HTML issues. This patch fixes all of them and prettifies the syntax.

http://validator.w3.org/check?uri=specs.openstack.org&charset=%28detect+automatically%29&doctype=Inline&group=0

* No Character Encoding Found! Falling back to UTF-8.
* No DOCTYPE found! Checking with default XHTML 1.0
  Transitional Document Type.
* No Character encoding declared at document level
* Line 4, Column 8: element "HEAD" undefined
* Line 5, Column 11: element "TITLE" undefined
* Line 27, Column 38: document type does not allow element "body" here
* Line 206, Column 9: end tag for element "BODY" which is not open
* Line 207, Column 7: end tag for "div" omitted, but OMITTAG NO was specified
* Line 207, Column 7: end tag for "body" omitted, but OMITTAG NO was specified
* Line 207, Column 7: end tag for "html" which is not finished

Change-Id: I1909fc2fb225063d29a04bda99cbbc6a82411573
Merge "Fix several HTML issues and prettify syntax"