* Adds a new page for updating profiles
* Refactors the add-contributor component to allow for updating
existing contributors
* Adds input labels to the contributor form and improves placeholders
* Adds event handlers for all contract contributor changes and uses them
for updating the UI
refs #122
This changes how we wait for web3 and accounts to be available and
renames web3Provider to ethProvider as we could be able to swap the
different providers (ethers.js vs. web3)
the web3 we are using is old and everything will change with web3 1.0
which is currently in beta for ages.
ethers.js seems to be a bit more lightweight and implements pretty much
the same API so let's give it a try.