Upgrade to react-md@v2

[carlgieringer]

Also we should consider cross platform frameworks: https://docs.google.com/spreadsheets/d/1Wrpe54CDwLzlAJ2QJgiMRyQ3hAaNnGpfhtCKAJ2OurU/edit

Upgrade steps:

• Buttons
• Dialogs (CreateJustificationDialog and transclusion)
• Cards
• Progress
• TextFields
• Menus, Dividers
• Switch/SelectionControlGroup
• Chip
• Autocomplete
• Grid (see LoginPage)
• App/Nav (TabsProps, Toolbar, Drawer, Snackbar, Tabs)
• Form that displays model's ErrorMessages?

[carlgieringer]

We'll do #304 instead.

[carlgieringer]

Actually we might upgrade react-md first. It's a good idea to convert most of the web app components to TS first so that typechecking helps us find any errors. We can use this command to find React components that haven't been converted to TS yet:

find . -type f -name "[[:upper:]]*.js"

Some items:

• Use messageProps instead of ErrorMessages/direct FormMessage.