Deep Linking, UI Improvements

Dapper officially deployed at:
dapper.layerone.co

Share any ABI using deep linking:
https://dapper.layerone.co/settings/QmY7NBwKCXQXZhhbqR6Jvog96wFC3VTLv1ecpL6ivqQSsn
Use Dapper to track and create new deployments with deployment notes
Portis is now working with Dapper to deploy/simulate contracts from any browser, or use metamask in chrome
Configurable ipfs node in settings
View contract’s ABI, and deployments (union of local storage and ABI JSON) when you select a contract from dropdown
Select from any of the deployment by address or by deployment notes
Deferred wallet connecting so you don't see a popup right when you enter site

Deferred sign in, IPFS config, Deploy Smart Contracts, Link Libraries

Merge pull request #33 from XYOracleNetwork/master

v0.2.7 release