Extra checks on the live handler, fixes issue with ie8
Merge branch 'master' into develop
Merge branch 'master' into develop
Don't push GAS functions inside _gaq.

Fixes #39

Plugins that return false are not pushed into _gaq.
Allow negative event values

GA accepts negative events now. So GAS should no longer change them to
0.
Fixes #38
Outbound events are non-interactive now

Fixes #37
Merge remote-tracking branch 'origin/develop' into dc.js

* origin/develop:
  Outbound events are non-interactive now
  Allow negative event values
  Don't push GAS functions inside _gaq.
  Extra checks on the live handler, fixes issue with ie8