Make PUT and DELETE consistent for _mapping, _alias and _warmer

See issue #4071

PUT options for _mapping:

Single type can now be added with

`[PUT|POST] {index|_all|*|regex|blank}/[_mapping|_mappings]/type`

and

`[PUT|POST] {index|_all|*|regex|blank}/type/[_mapping|_mappings]`

PUT options for _warmer:

PUT with a single warmer can now be done with

`[PUT|POST] {index|_all|*|prefix*|blank}/{type|_all|*|prefix*|blank}/[_warmer|_warmers]/warmer_name`

PUT options for _alias:

Single alias can now be PUT with

`[PUT|POST] {index|_all|*|prefix*|blank}/[_alias|_aliases]/alias`

DELETE options _mapping:

Several mappings can be deleted at once by defining several indices and types with

`[DELETE] /{index}/{type}`

`[DELETE] /{index}/{type}/_mapping`

`[DELETE] /{index}/_mapping/{type}`

where

`index= * | _all | glob pattern | name1, name2, …`

`type= * | _all | glob pattern | name1, name2, …`

Alternatively, the keyword `_mapings` can be used.

DELETE options for  _warmer:

Several warmers can be deleted at once by defining several indices and names with

`[DELETE] /{index}/_warmer/{type}`

where

`index= * | _all | glob pattern | name1, name2, …`

`type= * | _all | glob pattern | name1, name2, …`

Alternatively, the keyword `_warmers` can be used.

DELETE options for _alias:

Several aliases can be deleted at once by defining several indices and names with

`[DELETE] /{index}/_alias/{type}`

where

`index= * | _all | glob pattern | name1, name2, …`

`type= * | _all | glob pattern | name1, name2, …`

Alternatively, the keyword `_aliases` can be used.