sot added to accepted instruments to map
added tests and SOT sample file for sot maps
Adding corrections proposed by @dpshelio and @derdon
Py.test successfull
patch to not include SOT's xtension DUMP with useless telemetric data
modified database tests to take account of the new test SOT file
Merge pull request #1 from dpshelio/SOTMap

Patches on the database so it fixes SOTMap PR
Small bug fixes, patch up the units in wcs and a error in mapcube
animator
Fix a small annotation bug in MapCubeAnimator

Also split out the creation of the axes into a seperate method
so it can be overloaded
The little patch on the database to avoid the insertion of two HDUs in
a entry when reading Hinode/SOT file has been removed. We (Stuart and I)
have decided to filter this to avoid future filterings and loose the
control on the code in the future.
To avoid confussion, a small note pointing to the origin of this extra
HDU will be added in the guide.

http://listmgr.cv.nrao.edu/pipermail/fitsbits/2007-August/001923.html
added link on why there are 2 HDUs in the databse for Hinode/SOT
Fixed the examples for sunpy.map
Merge pull request #2 from dpshelio/SOTMap

Removed patch for the db, so now it counts 2 HDUs
improved test case for Database.add_many

check if the undo history is really empty after having called this method
added method Database.remove_many

analogous to add_many, this method only saves one entry in the history,
making it possible to undo removing many entries at once.
added method Database.clear_histories
Update lightcurve.rst
First attempt to add the color tables of Hinode/SOT.
For now it just includes the red color table used for intensity, however
it's still missing covering the cases of other types like Stokes and
magnetic field.  A template has been added.
moved SOT properties into the hinode.py file
removed sot.py file