remove useless controller
move account balance section to my profile (settings) page
refactor my assets page to history transactions page
remove my assets resources
Revert "refactor Order#avg_price"

This reverts commit e55e98019fb902674df832938baf0910a4a820aa.

Conflicts:
	spec/models/order_spec.rb
add History#orders page
add History#trades page
polish history menu item
refactor history#transactions to history#account
polish history order page
Merge pull request #111 from peatio/order-history

Order history