fix issue #782,#875

[petrovalex]

• $resource should handle multiple params with same name
• ignore slashes of undefined parameters
• fix default parameters issue, mentioned in POST's should not require default params #875

Thanks for your contribution! In order for us to be able to accept it, we ask you to sign our CLA (contributor's license agreement).

CLA is important for us to be able to avoid legal troubles down the road.

For individuals (a simple click-through form):
http://code.google.com/legal/individual-cla-v1.0.html

For corporations (print, sign and scan+email, fax or mail):
http://code.google.com/legal/corporate-cla-v1.0.html

[mhevery]

Copy & Paste this into PRs: "Thanks for your contribution! In order for us to be able to accept it, we ask you to sign our CLA (contributor's license agreement).

CLA is important for us to be able to avoid legal troubles down the road.

For individuals (a simple click-through form):
http://code.google.com/legal/individual-cla-v1.0.html

For corporations (print, sign and scan+email, fax or mail):
http://code.google.com/legal/corporate-cla-v1.0.html"

[mhevery]

MERGED