Evaluate cross platform UI frameworks

[carlgieringer]

Requirements:

• Strongly prefer one that supports react-native web to help share UI code between web app and mobile apps.
• Prefer one that allows us to cancel touch events (so that they don't cause downstream hover events (react-md relies upon onClick everywhere, and not onTouch)

spreadsheet

Front runner is currently React native paper, since we just added it to the mobile app. (But we aren't heavily invested in it yet.) Here are instructions for adding it to a web app. (We'd follow the custom Webpack setup.)

[carlgieringer]

The solution should provide Autocompletes that

• prevent Pressing enter with an autocomplete item highlighted both autocompletes and sends enter to the text input #383 and that
• support non-selectable headings for Prioritize recently created and viewed suggestions #297.
• support multiline text entry so that long inputs are legible on mobile

Related: #558, #414

[carlgieringer]

Related: #17, #221