Shield overhaul

[MagiusNecros]

I like bock rate. Block strength is dumb though; it's not like we ever get a greatshield when we need it.
I'd like to see tank weapons have a parry rate instead of having parry as a secondary stat.

All that needs to be done with block is to chop out block strength and just set the block amount to always be 30%.

So basically do what they did with parry and make all shields block a fixed amount. Meaning the only shields you'll ever bother with are the ones with highest block rate.