fixed JP2 flipping
Merge pull request #708 from wafels/helioviewer

fixed JP2 flipping
fixed a typo in the docstring of Database.add
Merge pull request #716 from derdon/dbdocs

fixed a typo in the docstring of Database.add
remove print from filetools
fix astropy Quantity error in draw_limb see astropy/#1881
Merge pull request #717 from Cadair/master

fix astropy Quantity error in draw_limb see astropy/#1881