Updated IsAnyTextBeforeHostnameAccepted to be IsAnyTextBeforeHostnameAccepte so it works in Oracle
Removed GetBoolean and GetGuid

GetBoolean and GetGuid are unsupported by System.Data.OracleClient
If using Oracle, use case insensitive matching
Renamed Comment to Comment_

Comment is an Oracle reserved word, so change the field to Comment_
Null check when loading settings
Fixed some more issues with the DbBlogProvider and Oracle