Bump bootstrap from 3.3.7 to 3.4.1 in /tools/graph-tool/src/main/webapp

Bumps [bootstrap](https://github.com/twbs/bootstrap) from 3.3.7 to 3.4.1.
- [Release notes](https://github.com/twbs/bootstrap/releases)
- [Commits](twbs/bootstrap@v3.3.7...v3.4.1)

---
updated-dependencies:
- dependency-name: bootstrap
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

tools/graph-tool/src/main/webapp/package.json

@@ -41,7 +41,7 @@
     "@swimlane/ngx-charts": "^5.2.0",
     "angular-router-loader": "^0.6.0",
     "angular2-moment": "^1.3.3",
-    "bootstrap": "3.3.7",
+    "bootstrap": "3.4.1",
     "bootstrap-datepicker": "1.6.4",
     "bootstrap-select": "1.12.2",
     "bootstrap-switch": "3.3.3",

tools/graph-tool/src/main/webapp/yarn.lock

@@ -755,10 +755,14 @@ [email protected]:
     express "3.4.x"
     phantomjs "1.9.x"
 
-[email protected].7, [email protected], bootstrap@^3.0, bootstrap@~3.3.7:
+[email protected].x, bootstrap@~3.3.7:
   version "3.3.7"
   resolved "https://registry.yarnpkg.com/bootstrap/-/bootstrap-3.3.7.tgz#5a389394549f23330875a3b150656574f8a9eb71"
 
+[email protected], bootstrap@^3.0:
+  version "3.4.1"
+  resolved "https://registry.yarnpkg.com/bootstrap/-/bootstrap-3.4.1.tgz#c3a347d419e289ad11f4033e3c4132b87c081d72"
+
 boxen@^0.6.0:
   version "0.6.0"
   resolved "https://registry.yarnpkg.com/boxen/-/boxen-0.6.0.tgz#8364d4248ac34ff0ef1b2f2bf49a6c60ce0d81b6"
@@ -4105,10 +4109,6 @@ ng2-file-upload@^1.2.1:
   version "1.2.1"
   resolved "https://registry.yarnpkg.com/ng2-file-upload/-/ng2-file-upload-1.2.1.tgz#5563c5dfd6f43fbfbe815c206e343464a0a6a197"
 
-ng2-slim-loading-bar@^4.0.0:
-  version "4.0.0"
-  resolved "https://registry.yarnpkg.com/ng2-slim-loading-bar/-/ng2-slim-loading-bar-4.0.0.tgz#7256fdde7c058f14955a3ef2e65afafb5b664603"
-
 no-case@^2.2.0:
   version "2.3.1"
   resolved "https://registry.yarnpkg.com/no-case/-/no-case-2.3.1.tgz#7aeba1c73a52184265554b7dc03baf720df80081"