PinNames addition, KL05Z uARM online toolchain

Added:
	- FRDM - TSI elec symbols
	- Nucleo - SERIAL_TX pinName to USBTX , same for RX
	- KL05Z - uARM set as online toolchain

@bcostm Please can you approve this changes? I renamed symbols for default TX, RX, to be compatible with other platforms and code already on mbed. It looks like I changed a lot there but I only corrected indentation to 4 spaces, so no changes there except renaming SERIAL_TX and SERIAL_RX symbols.

Is there anything else I have to set to make uARM as default for KL05Z?
Please don't merge until bcostm approves this. Thanks.

Regards,
0xc0170