Move blog app into the basicblog directory

Move the blog app into the basicblog directory, so as to prepare
the way for making git repo pip installable.
Merge branch 'master' into development
Modified view.py to refer basicblog module instead of portfolio.blog
Removed further references to portfolio.blog
Removed more references to portfolio.blog
Removed yet more references to portfolio.blog
Replace reference to basicblog with package relative import in views.py
Implement package relative imports throughout

Implement package relative imports throughout. It should now be possible
to change the name of the basicblog app without modifying the app's source
code.
Merge branch 'development'