streams with level parameter

[crotwell]

Docs make it seem like level shoudl not be used with streams, but it changes output. level should either cause error or maybe be ignored with /streams

Ex:

http://rtserve.iris.washington.edu/streams?match=^AK_BCP.*

AK_BCP__BHE/MSEED  2018-02-20T17:13:54.208400Z  2018-02-20T18:29:04.088400Z
AK_BCP__BHN/MSEED  2018-02-20T17:13:58.868400Z  2018-02-20T18:28:22.988400Z
AK_BCP__BHZ/MSEED  2018-02-20T17:14:00.928400Z  2018-02-20T18:28:59.348400Z
...

http://rtserve.iris.washington.edu/streams?level=2&match=^AK_BCP.*

AK_BCP

http://rtserve.iris.washington.edu/streams?level=4&match=^AK_BCP.*

AK_BCP__BHE
AK_BCP__BHN
AK_BCP__BHZ
...

[chad-earthscope]

Fixed documentation in 79d65d5f4e39d51e7fa99ded04ce4b926c66bdd5.

The level parameter is not meant to be used with the /streams endpoint. The functionality remains for backwards compatibility, but is undocumented.