Fixing Depreciation, Saving and Performance Tweaks

[Wrhector]

I can break this up, but simply this fixes:

• Django deprecation warnings.
• A previous commit broke sql and profile saving entirely.
• Stop attaching the profiler every run if not used.
• Better update of total queries (Though this really could be refactored into one update)

[avelis]

@Wrhector Thanks for fixing the broken collection. Truly was a mistake on my part. Also, I appreciate the effort to the project.

In the interest of progress I have merged it in!

[wm3ndez]

@Wrhector 958d843 breaks django=1.7.x, is this version of django no longer supported?

[Wrhector]

Django 1.7 has been end of life for 6 months now, though oddly travis passed checks with Django 1.7, I'll write a patch to support both.

[wm3ndez]

@Wrhector I already sent a patch, thanks