[enh] Add connection fallback at startup - fix #476

- Network view : add offline node filter
- Add new (empty) view to display a block

- Movre notifications management into the ES plugin
- Add messages popover
- Fix new notification display  (if message)
- Fix new notification "marks as read"
- Fix CSS style  for item-avatar + item-icon-right

- Only load unread notification count, on login
- Fix notification popover CSS style

- Join wizard : more steps, with help button or hint text
- Unable to register on currency init (block#0 not written) fix #160

- Code refactoring on login (split controller, store wallet on rootScope)
- BMA: add cache on get current UD
- ES : Market record view : display price on UD/Qty
- ES : Market record edit : add currency selection

- Menu: add an extension point to insert item from plugins

- Add build time on JS path - Fix #55
- Remove menu footer on mobile device - fix #47
- Currency explore: remove duplicate layout for large screen UI - Fix #18
- Build: add minfy, useref and ngInject
- Build: add gulp task 'build:web', that genrate a ZIP for web site deployment
- Generate templates and i18n info JS file

- Device: fix ready() callback, replace Device.camera.enable with Device.isEnable()
- Fix JS syntaxe
- Currency lookup : Fix currency name in list

- init currency chart controller and template
- Fix device plugins (camera, scan, copy) and refactoring service
- Peers : fix CSS on hover
- Add chevron on some items, in views: Transfert, Wallet and Identity
- WotLookup: set modal bottom to the end of the window

Conflicts:
	bower.json
	www/css/style.css
	www/i18n/locale-en.json
	www/index.html
	www/js/app.js
	www/js/controllers/currency-controllers.js
	www/js/controllers/home-controllers.js
	www/js/controllers/wallet-controllers.js
	www/js/services/crypto-services.js
	www/js/services/utils-services.js
	www/js/services/wallet-services.js
	www/templates/account/new_account.html
	www/templates/account/view_transfer.html
	www/templates/account/view_wallet.html
	www/templates/currency/select_currency.html
	www/templates/currency/tabs/view_parameters.html
	www/templates/currency/view_peer.html
	www/templates/explore/explore_currency.html
	www/templates/explore/explore_tabs.html
	www/templates/home.html
	www/templates/login.html
	www/templates/menu.html
	www/templates/wot/lookup.html
	www/templates/wot/modal_lookup.html

- Add header to identity view, and fab button

 - Fix i18n / French