djangular's karma support should be updated, and can be enhanced

[robdennis]

Djangular supports developers writing karma using these two management commands:

• makeangularsite creates karma config file templates that handle the djangular app paths
• testjs will shell out to karma and run the appropriate config file

the first is in need of an update:
as karma is on 0.12 and djangular writes out a file that's no longer compatible (I believe we're writing out a 0.8-style file, but there was backwards incompatible change in 0.9 or 0.10)

the second could use some enhancements:

• the management command assumes that karma exists on the path (which isn't typical when not installing using npm -g)
• there's no way to pass additional command line arguments to the karma invocation, which is useful for having jenkins run against PhantomJS and then letting developers override this at their desktops to run Firefox/Chrome
• running testjs assume's that you have a very particular working directory so it can find an app's config files. It would be convenient let testjs work no matter your working directory.

[LiamK]

+1