REMOVED: Installer requirement that page caching be disabled
ADDED: Installer warning outlining the issues with full page caching for guests and the issue that search engines may index obfuscated content unless obfuscation is disabled for guests.
ADDED: Validation when enabling guest obfuscation in options, if full page caching is also enabled in config.php, validation will fail
CHANGE: Made guest obfuscation disabled by default
ADD: Phrase warning + some typo corrections on existing options