Adhere to PSR-1/PSR-2

[igorsantos07]

This action would help people to undestand code and contribute, without issues on code-styling changes :)

Specially, there's a lot of unneeded spaces being used in function calls and/or if clauses.

[c9s]

I am fine with new code come up with PSR-1/2, but I don't prefer using a formatter to reformat these code, because we have some branches not merged yet. the space/line changes might cause conflicts.

[igorsantos07]

indeed. might stay here for later :)