Update es_ES.js

Hi Martin... this is my updated translation. 

I have a couple doubts:

line 79 says. The sub-user can se and query...  Maybe it could be: The subuser can see ...?

line 82 says: The privilegies is granted.... Maybe it could be: The privilegies are granted?

Until next

Edwin
Merge pull request #7 from geomatica/patch-2

Update es_ES.js