Upgrade to latest react (16.8 with hooks) and fix console errors and update deprecated methods to match to best practices

[vic-georgiev]

We should update to latest react (16.2 as of Dec 27). There are still issues with our components throwing either warnings or errors. Use React Dev tools to view all warnings and better debug the code.

[aretheregods]

Oh, wait, never mind. I had a re-read of the bug bash rules. I'm working on fixes now.

[aretheregods]

@gondzo The solving of this issue seems directly tied to the solving of issue #1424 due to the fact that both of these issues tie to the incompatibility of appirio-tech/react-components in its current form with React v16 and the continuing and deepening tech-debt present in that repo. The errors I'm getting on compiling connect-app are coming from usage of that module. It seems that in order to update this issue, one would have to also fix issue #1424, which is untenable for me at this time given the complexity and depth of both issues. Noting these facts, I'm relinquishing my assignment and opening this issue back up for pickup.
All the best to whoever picks this up after me. And good luck.