[Bluetooth] Enable style checking for C++ code

Fix style issues and enable style checking for Bluetooth C++ code.
[Bluetooth] Fix JS style
[Bluetooth] Remove dead code
[Bluetooth] Fix boring warning

G++ 4.5.3 complains about value being not initialized. I think the
warning is bogus but this change also improves readability, so here it
is.
Merge pull request #193 from cmarcelo/bluetooth-style

Bluetooth style