Case page accept query strings for preset view/search filter keys/group

[cswbrian]

Note: for support questions, please use stackoverflow. This repository's issues are reserved for feature requests and bug reports.

• I'm submitting a ...
  • bug report
  • feature request
  • support request => Please do not submit support request here, see note at the top of this template.

Case page should accept query strings which accept preset view/ search filter keys/ groups

Example applications:
When user clicks 「確診」in index page, it can land on cases page with 「確診」filtered in the search bar
When user clicks the map in index page, it can land on cases page with the sub-districts filtered in the search bar

• Do you want to request a feature or report a bug?

• What is the current behavior?

• If the current behavior is a bug, please provide the steps to reproduce and if possible a minimal demo of the problem

• What is the expected behavior?

• What is the motivation / use case for changing the behavior?

• Please tell us about your environment:

  • Version: 2.0.0-beta.X
  • Browser: [all | Chrome XX | Firefox XX | IE XX | Safari XX | Mobile Chrome XX | Android X.X Web Browser | iOS XX Safari | iOS XX UIWebView | iOS XX WKWebView ]
  • Language: [all | TypeScript X.X | ES6/7 | ES5 | Dart]

• Other information (e.g. detailed explanation, stacktraces, related issues, suggestions how to fix, links for us to have context, eg. stackoverflow, gitter, etc)