[FEATURE] RT-2463 Balances sidebar widget LESS

Add LESS file for displaying account balances in a sidebar widget.
[FEATURE] RT-2463 LESS: Generalize currency colors

Colorization by currency is no longer used by Balance tab only, but also
by Balances sidebar widget.
[FEATURE] RT-2463 Sidebar: Add Balances widget

Add Jade template for sidebar balances widget.
[FEATURE] RT-2463 Balances wid.: Template includes

Include sidebar with balances widget in Send, Trade, Convert tabs.
[FIX] RT-2463 Remove sidebar widgets horizontal padding
Merge pull request #1694 from jublonet/feature/2463-balances-in-sidebar

Add balances widget in sidebar
[FIX] RT-1227: Client should parse "address?dt=xxx"
Merge pull request #1719 from darkdarkdragon/develop-RT-1227

[FIX] RT-1227: Client should parse "address?dt=xxx"
[TASK] New loading screen for Ripple Trade
[FIX] Address PR comments
-Make img lower case
-Fix ng-show/hide
Merge branch 'loadingPage' of github.com:mrajvanshy/ripple-client into loadingPage

Conflicts:
	src/jade/tabs/exchange.jade
	src/jade/tabs/send.jade
	src/jade/tabs/trade.jade
	src/less/ripple/tabs.less