Mm 16694 master validate urls (#1000)

* validate urls before deeplink or link click

* tests for isValidURL utility function

* review change - invert condition

* add validation for loaded files

bounds-info.json, app-state.json, config.json

* further validation and tweaks

certificate.json, permission.json

* add 2 more files for validation

* parse and validate deeplinks

- includes fix for windows deeplink when app is open

* disable auto-updator when in dev

* Squirrel is not used anymore

* fix validating allowedProtocols

* discard any args following a deeplink url

* tweaks

* update test

* support scheme’s with and without slashes

* stop after finding the first occurance of a deep link

* test updates

* updates to run tests successfully

* port updates to validation from 4.2

* url validation updates

changed validation package to better support internal domains and punycode domains

package.json

@@ -58,7 +58,7 @@
     "eslint": "^5.9.0",
     "eslint-config-mattermost": "github:mattermost/eslint-config-mattermost",
     "eslint-plugin-cypress": "^2.1.2",
-    "eslint-plugin-eslint-comments": "^3.1.1",
+    "eslint-plugin-eslint-comments": "^3.1.2",
     "eslint-plugin-header": "^2.0.0",
     "eslint-plugin-import": "^2.14.0",
     "eslint-plugin-react": "^7.11.1",