fix scrypt function
move scrypt to crypto.coffee; include unit test
keep more nonce bits
remove the empty node blueprint
load/save account state
challenge and verify
verify signature before saving/loading state
'e' module
timestamp challenges
move create_testing_app to common module
separate url for creating account
create_app returns immediately
save/load data on backend
secretbox encryption
encrypt data when saving to backend
move login test to test_account module
create_app returns app object
whitespace
'create account' page
add missing classes