Code cleanup: unverified request no longer raises a InvalidAuthenticityToken exception.

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extra : convert_revision : svn%3Ae93f8b46-1217-0410-a6f0-8f06a7374b81/trunk%4012267
Removed deprecated align and width html attributes (#15307).

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extra : convert_revision : svn%3Ae93f8b46-1217-0410-a6f0-8f06a7374b81/trunk%4012268
Removed svn:mergeinfo properties from trunk.

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extra : convert_revision : svn%3Ae93f8b46-1217-0410-a6f0-8f06a7374b81/trunk%4012269