Added a valid flag per bunch crossing as per #26.
Fixed some bugs for #26.
Fixed bug in buffer for valid bits for #26.
Merge branch 'master' into global_valid_flag
Merge branch 'master' into global_valid_flag
Modified how valid bit is checked for #26.
Fixed calculation of valid bit and adjusted delay as per @jlingema for #26.
Merge branch 'ttc_counters' into master. Continuing work on #62 there.

Conflicts:
	uGMT_algos/firmware/hdl/deserialize_mu_quad.vhd
	uGMT_algos/firmware/hdl/deserializer_stage_muons.vhd
Added registers to quads to store error counters for #62.
Modified the address table and some small fixes for #62.