Updating client dependencies. Switching to yarn. (#6433)

* Updating client dependancies. Switching to using yarn.

* Updating React

* Moving pure components to using function syntax (performance gains with newer react version)

* Updating client dependancies.

* Ignore .yarninstall

* Enabling pre-lockfile because it's the entire point of using yarn.

* Removing old webpack config

* Moving to new prop-types

* Fixing ESLint Errors

* Updating jest snapshots.

* Cleaning up package.json

webapp/package.json

@@ -6,7 +6,7 @@
   "version": "0.0.1",
   "private": true,
   "dependencies": {
-    "autolinker": "1.4.2",
+    "autolinker": "1.4.3",
     "bootstrap": "3.3.7",
     "bootstrap-colorpicker": "2.3.6",
     "chart.js": "2.5.0",
@@ -14,83 +14,82 @@
     "fastclick": "1.0.6",
     "flux": "3.1.2",
     "font-awesome": "4.7.0",
-    "highlight.js": "9.10.0",
+    "highlight.js": "9.11.0",
     "inobounce": "0.1.4",
     "intl": "1.2.5",
     "jasny-bootstrap": "3.1.3",
-    "jquery": "3.1.1",
+    "jquery": "3.2.1",
     "localforage": "1.5.0",
     "marked": "mattermost/marked#8f5902fff9bad793cd6c66e0c44002c9e79e1317",
     "match-at": "0.1.0",
     "mattermost-redux": "mattermost/mattermost-redux#webapp-master",
     "object-assign": "4.1.1",
-    "pdfjs-dist": "1.7.363",
-    "perfect-scrollbar": "0.6.16",
-    "prop-types": "15.5.9",
-    "react": "15.4.2",
-    "react-addons-pure-render-mixin": "15.4.2",
-    "react-bootstrap": "0.30.8",
-    "react-custom-scrollbars": "4.0.2",
-    "react-dom": "15.4.2",
-    "react-intl": "2.2.3",
+    "pdfjs-dist": "1.8.361",
+    "perfect-scrollbar": "0.7.0",
+    "prop-types": "15.5.10",
+    "react": "15.5.4",
+    "react-addons-pure-render-mixin": "15.5.2",
+    "react-bootstrap": "0.31.0",
+    "react-custom-scrollbars": "4.1.2",
+    "react-dom": "15.5.4",
+    "react-intl": "2.3.0",
     "react-redux": "5.0.4",
     "react-router": "2.8.1",
-    "react-select": "1.0.0-rc.3",
-    "redux-batched-actions": "0.1.5",
-    "redux-persist": "4.6.0",
+    "react-select": "1.0.0-rc.4",
+    "redux-batched-actions": "0.2.0",
+    "redux-persist": "4.8.0",
     "redux-persist-transform-filter": "0.0.9",
-    "superagent": "3.5.0",
+    "superagent": "3.5.2",
     "twemoji": "2.2.5",
-    "velocity-animate": "1.4.3",
-    "webrtc-adapter": "3.2.0",
+    "velocity-animate": "1.5.0",
+    "webrtc-adapter": "3.4.2",
     "whatwg-fetch": "2.0.3",
-    "xregexp": "3.1.1"
+    "xregexp": "3.2.0"
   },
   "devDependencies": {
     "babel-cli": "6.24.1",
-    "babel-core": "6.24.0",
+    "babel-core": "6.24.1",
     "babel-eslint": "7.1.1",
-    "babel-jest": "19.0.0",
-    "babel-loader": "6.4.0",
-    "babel-plugin-module-resolver": "2.7.0",
+    "babel-jest": "20.0.3",
+    "babel-loader": "7.0.0",
+    "babel-plugin-module-resolver": "2.7.1",
     "babel-plugin-transform-runtime": "6.23.0",
     "babel-polyfill": "6.23.0",
-    "babel-preset-es2015": "6.24.0",
-    "babel-preset-react": "6.23.0",
-    "babel-preset-stage-0": "6.22.0",
+    "babel-preset-es2015": "6.24.1",
+    "babel-preset-react": "6.24.1",
+    "babel-preset-stage-0": "6.24.1",
     "copy-webpack-plugin": "4.0.1",
-    "cross-env": "3.2.3",
-    "css-loader": "0.27.3",
-    "enzyme": "2.7.1",
-    "enzyme-to-json": "1.5.0",
+    "cross-env": "5.0.0",
+    "css-loader": "0.28.1",
+    "enzyme": "2.8.2",
+    "enzyme-to-json": "1.5.1",
     "eslint": "3.17.1",
     "eslint-plugin-react": "6.10.0",
     "exports-loader": "0.6.4",
     "extract-text-webpack-plugin": "2.1.0",
-    "file-loader": "0.10.1",
+    "file-loader": "0.11.1",
     "html-loader": "0.4.5",
     "html-webpack-plugin": "2.28.0",
     "identity-obj-proxy": "3.0.0",
-    "image-webpack-loader": "3.2.0",
+    "image-webpack-loader": "3.3.1",
     "imports-loader": "0.7.1",
-    "jest": "19.0.2",
-    "jest-cli": "19.0.2",
+    "jest": "20.0.3",
+    "jest-cli": "20.0.3",
     "jquery-deferred": "0.3.1",
-    "jsdom": "9.12.0",
-    "jsdom-global": "2.1.1",
+    "jsdom": "10.1.0",
+    "jsdom-global": "3.0.2",
     "json-loader": "0.5.4",
-    "node-sass": "4.5.0",
+    "node-sass": "4.5.3",
     "raw-loader": "0.5.1",
-    "react-addons-test-utils": "15.4.2",
-    "react-dom": "15.4.2",
-    "react-outside-event": "1.2.4",
-    "remote-redux-devtools": "0.5.7",
-    "remote-redux-devtools-on-debugger": "0.7.0",
-    "sass-loader": "6.0.3",
-    "style-loader": "0.13.2",
+    "react-addons-test-utils": "15.5.1",
+    "react-outside-event": "1.2.5",
+    "remote-redux-devtools": "0.5.10",
+    "remote-redux-devtools-on-debugger": "0.7.1",
+    "sass-loader": "6.0.5",
+    "style-loader": "0.17.0",
     "url-loader": "0.5.8",
-    "webpack": "2.2.1",
-    "webpack-node-externals": "1.5.4"
+    "webpack": "2.5.1",
+    "webpack-node-externals": "1.6.0"
   },
   "jest": {
     "snapshotSerializers": [
@@ -132,6 +131,7 @@
     "run": "cross-env NODE_ENV=production webpack --progress --watch",
     "run-fullmap": "webpack --progress --watch",
     "test": "jest",
+    "updatesnapshot": "jest --updateSnapshot",
     "test:watch": "jest --watch",
     "test:coverage": "jest --coverage"
   }