petascope - Default WMS style changed behavior

[Bang Pham Huu]

For v10, WMS default style of a layer needs to change as below:

1. if styles are defined then the server must apply one of them
   • if the client specifies style X, then X is applied
   • if the client does not specify a style, then
     • if a default is set on style Y, then Y is applied
     • if no default is set on any style, then Z is applied, where Z is chosen by some consistent criteria, e.g. first style after lexicographic ordering by style name
2. if no styles are defined then the server returns raw data

In WMS Getcapabilities:

• adding <default> property under <rasdaman> in the abstract of the style

In WSclient / WMS / DescribeLayer tab

• at most 1 style can be default, reflected via a radio box in the wcs client