Adding colname middleware param

Signed-off-by: José Luis Di Biase <josx@interorganic.com.ar>
Adding mongo fulltext support

Signed-off-by: José Luis Di Biase <josx@interorganic.com.ar>
whitespaces

Signed-off-by: José Luis Di Biase <josx@interorganic.com.ar>
Adding mongodb text search support advice

Signed-off-by: José Luis Di Biase <josx@interorganic.com.ar>