Upgrade to bootstrap 4.1 and added popper.js

package.json

@@ -25,7 +25,7 @@
     "babel-preset-latest": "^6.24.1",
     "babel-preset-stage-2": "^6.24.1",
     "blackst0ne-mermaid": "^7.1.0-fixed",
-    "bootstrap": "^4.0.0",
+    "bootstrap": "4.1",
     "bootstrap-sass": "^3.3.6",
     "brace-expansion": "^1.1.8",
     "chart.js": "1.0.2",
@@ -67,6 +67,7 @@
     "mousetrap": "^1.4.6",
     "name-all-modules-plugin": "^1.0.1",
     "pikaday": "^1.6.1",
+    "popper.js": "^1.14.3",
     "prismjs": "^1.6.0",
     "raphael": "^2.2.7",
     "raven-js": "^3.22.1",

yarn.lock

@@ -1256,9 +1256,9 @@ bootstrap-sass@^3.3.6:
   version "3.3.6"
   resolved "https://registry.yarnpkg.com/bootstrap-sass/-/bootstrap-sass-3.3.6.tgz#363b0d300e868d3e70134c1a742bb17288444fd1"
 
-bootstrap@^4.0.0:
-  version "4.0.0"
-  resolved "https://registry.yarnpkg.com/bootstrap/-/bootstrap-4.0.0.tgz#ceb03842c145fcc1b9b4e15da2a05656ba68469a"
+bootstrap@4.1:
+  version "4.1.0"
+  resolved "https://registry.yarnpkg.com/bootstrap/-/bootstrap-4.1.0.tgz#110b05c31a236d56dbc9adcda6dd16f53738a28a"
 
 boxen@^1.2.1:
   version "1.3.0"
@@ -6380,6 +6380,10 @@ pluralize@^1.2.1:
   version "1.2.1"
   resolved "https://registry.yarnpkg.com/pluralize/-/pluralize-1.2.1.tgz#d1a21483fd22bb41e58a12fa3421823140897c45"
 
+popper.js@^1.14.3:
+  version "1.14.3"
+  resolved "https://registry.yarnpkg.com/popper.js/-/popper.js-1.14.3.tgz#1438f98d046acf7b4d78cd502bf418ac64d4f095"
+
 portfinder@^1.0.9:
   version "1.0.13"
   resolved "https://registry.yarnpkg.com/portfinder/-/portfinder-1.0.13.tgz#bb32ecd87c27104ae6ee44b5a3ccbf0ebb1aede9"