Fixes nan assertion failure on ubuntu

https://github.com/sass/node-sass/issues/337
[#81]
Upgrade bitcoinjs-lib to latest master

[#76]
add elipsis to history address
use floats instead of flex
tidy up transaction design
add velocity (with jquery shim) and animate user settings
improve user detail animation & remove ractive transitions
Merge branch 'feature/velocity' of github.com:hivewallet/hive-js into feature/velocity
animate dropdowns