Update StackTraceScrubber.cs

Slight improvement to the path scrubbing regex to prevent it from falsely matching strings like:

`name: File.foo`

Haven't had a chance to test formally yet, but this works on my machine.
Added multiple ApprovalName ability w/mark skiba
Sizing error via Mark Skiba
something weird happened
Fixing mvc references
Tested StackTraceScrubber change; minor cleanup
Merge pull request #99 from jamesrcounts/master

Update StackTraceScrubber.cs