Change XML output from:

<CssParameter><@name="fill"><#text="#000000"></CssParameter>

to:

<CssParameter name="fill">#000000</CssParameter>

Also:
- Get rid of initial black color on ramps
- Add gray, jet ramps to available options in ClassifierResource
Merge pull request #390 from cga-harvard/sldservice_pr1

SldService community module tweaks