Update TODO
Add WAMP status indicator element
Fix WAMP open/close event dispatching

Now based on when the 'connected' attribute changes which will ensure no
double events get fired.
Disable page reload on disconnect
Implement two state page element
Create online version of set up page
Add remaining pages as placeholders
Change wording on WAMP status indicator
Create online versions of remaining pages
Add state attribute to sr-wamp-core

Made 'connected' and 'disconnected' attributes available for
convenience.
Fix typo in sr-core-page element
Fix issue where pages where extending sr-core-page
Fix discrepancy between WAMP state naming
Change page on polymer ready rather than on connect
Add custom pages support for online/offline mode