adding custom settings updates

[rtpHarry]

http://docs.orchardproject.net/Documentation/Adding-custom-settings

• typo - the view - <legend>@T("Content sharing settigs")</legend>
• code samples shouldn't have horizontal scroll
• structure - Pre-orchard should be collapsed to a note at the start of the "Defining site scope settings (Orchard 1.8 Onwards)" section
• structure - "Defining site scope settings (Orchard 1.8 Onwards)" shouldn't have version number
• broken images x2 - points at external blog
• bad example - make it self contained, rather than addthis - licence guid?
• needs formatting - near end of "Defining settings for Content Types" - step by step needs ol formatting
• typo - search for "RegistrationSetttingsPartHandler" - three ttt
• remove "i'll show you how to do it" reference at start
• groupid needs more definition - look at my HeadOfficeSettingsPartHandler.cs for a better example