Run automated tab to space indentation fixer.
Fix @dpshelio's comments on doc indentation.
Merge pull request #4 from Cadair/coordinates-framework

This makes the representation subclassing work using astropy/astropy#2691
Removed some unused imports.
Added a dateobs TimeFrameAttribute parameter to HelioGraphicStonyhurst.
It will be used to calculate the Carrington offset from within the class.
Tests not passing right now.
Merge pull request #1066 from Cadair/tabs

[BigFix]: Run automated tab to space indentation fixer.
Merge branch 'master' of https://github.com/sunpy/sunpy into coordinates-framework
Worked on setting HelioGraphicStonyhurst right.
1. HGS was having problems with 'rad' being inserted as a kwarg where it shouldn't be. Fixed this condition.
2. It was decided, after some deliberation, to let BaseCoordinateFrame handle 'dateobs', which is a TimeFrameAttribute. The rationale behind this is that BCF, if it detects the presence of the 'dateobs' kwarg, pops it off and inserts its value on its own. Thus, we simply add it to kwargs forcefully in our constructor if it isn't there.
3. Only tests remain to be fixed.
This commit aims to fix the current tests to work with commits made earlier.
1. Tests were chopped and changed to match the current config of frames.py.
2. In the transform functions where a spherical representation is to be fed to the returned frame object, SphericalRep was replaced by SphericalWrap180Rep. Could cause problems later if not spotted.