add liability-proof to Gemfile
btc liabilities proof rake task
assets page
liability proof for all kinds of currencies
update production doc
show btc assets
recreate assets index layout
add liability proof frame
show exchange total assets
adjust liability proof json display
fetch partial tree
copy liability data
fix liability data copy
polish liability proof frame
btc assets panel
add CNY assets panel
nav bar on assets page
polish assets page
Merge branch 'master' into solvency-proof

Conflicts:
	Gemfile
	db/schema.rb
update liability proof gem