StroomQL is accepting case-insensitive Field names

[stroomdev10]

from 'My Index'
where eventid=1
select EventId, eventid

gives lots of
1, NULL

[at055612]

Was agreed between @stroomdev10 , @stroomdev66 and myself that field names should be case-insensitive in stroomQL. Same for datasources.

Need to check that code completion/snippets are case-insensitive also.