port views to hackney

all tests pass now

t/001-load.t ........ ok
t/002-server.t ...... ok
t/003-database.t .... ok
t/004-document.t .... ok
t/005-view.t ........ ok
t/006-attachment.t .. ok
All tests successful.
Files=6, Tests=61,  3 wallclock secs ( 0.08 usr  0.02 sys +  2.35 cusr
1.10 csys =  3.55 CPU)
Result: PASS