Initial remote access implementation from M Baski
Working version of remote fetch capability

These changes have been tested on Windows called from both MATLAB and
IPython.  They have also been tested on Linux, using a partial copy of
the Ska environment on a FOT dev box, but they have not been tested in a
full Ska environment.  This commit matches FOT SVN repo rev 6873.
Whitespace / indent cleanup
Change version from 0.21 to 0.22
Add docs on remote Windows access
Fix minor issues causing sphinx-build warnings/errors
Whitespace cleanup in docs
Add test_fetch_regr.py to regression test fetch
Make tests work from installed package via test() function

This includes adding the regression output as a configured
data file and refactoring the test script so it can run
as main to generate the regression data or as a pytest
or nosetest file to run the test.  Also added a simple test()
function that can be run as:

 Ska.engarchive.test()
 Ska.engarchive.test('-s')  # provide intermediate output
Update version to 0.22.1

(This actually happened in the previous squashed commit, so
just making this commit for the record).
Add fetch regression test file to MANIFEST.in
Merge pull request #50 from sot/remote-fetch

Remote access implementation from M Baski