refactor($http): simplify buildUrl function

[pkozlowski-opensource]

Small refactor to the $http's buildUrl function:

• avoid double isObject check
• shaves off few bytes by replacing if statement with a ternary operator

[caitp]

shaves off few bytes by replacing if statement with a ternary operator

Won't a minifier do that anyways? I think we're doing it this way for readability purposes --- I don't have a big opinion on this one though

[pkozlowski-opensource]

Won't a minifier do that anyways?

I think it will. I guess I just prefer ternary to if but yeh, initially I've just removed the double check for isObject.

[caitp]

I think we should probably keep the explicit if statements and let the minifier deal with it, but otherwise LGTM

[pkozlowski-opensource]

OK, pushed a version with a minimal change for double check.

[caitp]

Looks good =)