[FIX]Add reference to 'basic search' and 'advanced search' in their descriptions to reduce confusion with so many names for search preferences in admin panels (basic search shown in features) and in admin wizard.

git-svn-id: file:///var/local/code.tiki.org/tikisvn/branches/12.x@48025 b456876b-0849-0410-b77d-98878d47e9d5
[FIX]Avoid duplication of 'basic search' checkbox in both screens features (removed) and search (kept with the rest of search related features)

git-svn-id: file:///var/local/code.tiki.org/tikisvn/branches/12.x@48026 b456876b-0849-0410-b77d-98878d47e9d5
A few more strings translated

git-svn-id: file:///var/local/code.tiki.org/tikisvn/branches/12.x@48027 b456876b-0849-0410-b77d-98878d47e9d5