Small documentation update

As the error templates are now by default inside the views folder.
Make the error templates path configurable
Group error templates entries in changelog
Rename config item "error_templates_path" to "error_views_path"
Uniformization in smiley helper documentation

oversight from 20292311636837e120d205e470e41826820feb46
Change 'standardize_newlines' default to FALSE

I don't see why it should be enabled by default. Also, this is the functionality triggering #2923
Doc fix for Encryption library
Minor fixes
Merge branch 'develop' of /Users/neko/github/CodeIgniter/user_guide_src/ into develop_japanese