Fix syntax errors on sort JSON example
Added documentation for 'span_multi' query
Update get.textile

Added _source endpoint documentation
Update get.textile
Update get.textile
Update bulk.textile
Update bulk.textile
Update bulk.textile
Update sort.textile
Update admin-indices-aliases.textile
Update admin-indices-aliases.textile
Update admin-indices-aliases.textile
Update admin-indices-aliases.textile
Update admin-indices-aliases.textile
Update admin-indices-aliases.textile
Update admin-indices-aliases.textile
Update admin-indices-aliases.textile
Update admin-indices-aliases.textile
Update admin-indices-aliases.textile
Update plugin documentation relative to https://github.com/elasticsearch/elasticsearch/issues/3112