[FIX] include plugin: Respect included page's 'is_html' setting so line-breaks are always preserved when a wiki is included in an html one, or vice versa

git-svn-id: file:///var/local/code.tiki.org/tikisvn/branches/12.x@48937 b456876b-0849-0410-b77d-98878d47e9d5
[FIX] New attempt to fix tiki-check.php MySQL SSL test to tiki-check. Should stand-alone compatible this time.
Note: I don't have a MySQL SSL test server. Can somebody please help testing. Ref: Ticket ID 5014 

git-svn-id: file:///var/local/code.tiki.org/tikisvn/branches/12.x@48938 b456876b-0849-0410-b77d-98878d47e9d5
[FIX] HTML errors in stand alone mode

git-svn-id: file:///var/local/code.tiki.org/tikisvn/branches/12.x@48939 b456876b-0849-0410-b77d-98878d47e9d5