Replace SDSS query and templates URLs
Fix bug with `names` and first comment line

When using np.genfromtxt with names=True, the first comment line is examined
for names
http://docs.scipy.org/doc/numpy/user/basics.io.genfromtxt.html#the-comments-argument
and the first line of the SDSS returned data is a comment but does not contain
the names, which are on the second line.
Fix capitalization issue
Adjusted imaging URLs
Replaced spectra URLs and removed spurious str conversions
Modify data test to reflect DR10 changes
Changed SDSS remote test class name for test autodection
Merge pull request #259 from loicseguin/sdss-dr10

Update SDSS to the latest data release DR10
Added _args_to_payload function
Modified get_spectra_async to accept coordinates
Modified get_images to accept coordinates
Fixed handling of multiple bands
Fixed SQL query to avoid duplicate images or spectra
Updated tests for new API and add new tests
Removed unused imports
PEP8 cleanup
Updated documentation
Merge pull request #260 from loicseguin/sdss-api

Improve SDSS API compliance
Make FileContainer accept the same args as get_readable_fileobj
Merge pull request #261 from loicseguin/filecontainer-timeout

Make FileContainer accept the same args as get_readable_fileobj