Add Global/Local qualifiers to all Instances
rename allpath_hprop to path_ishprop, close #545
Merge pull request #547 from mikeshulman/instances

Add Global/Local qualifiers to all Instances
Merge pull request #548 from mikeshulman/path-ishprop

rename allpath_hprop to path_ishprop, close #545
remove workaround for fixed bug 3588
Merge pull request #549 from mikeshulman/bug3588

remove workaround for fixed bug 3588
Solution to Exc. 3.9
Lemma 3.3.2,3
fixed misnomers in solution of Exc. 3.9
Added Book_3_3_2,3
simplified 3.9, Import HoTTBook can be a problem
reverted to d7fa7f...
Lemmas 3.3.2 and 3.3.3 added
Backrefs for Lemmas 3.3.2 and 3.3.3 added
Solution to Exc. 3.9
Many improvements in the solution of Exc.3.9
all_to_empty_isequiv with hack
Many small fixes concerning Exc. 3.9