Big simplification of proofs. Deleted lots of unnecessary theorems

tiny changes;

changed to a link;

local simpset theory data; simp add / del attributes; smart_simp_tac and method;

local claset theory data; intro, elim, dest, del attributes; single_tac and method; fast, best etc. methods;

Object logic specific operations.

Isar setups;

added metacuts_tac;

removed local_theory;

exnMessage Interrupt;