upgrade libs

* bootstrap-sass

package.json

@@ -131,7 +131,7 @@
     "babel-polyfill": "^6.26.0",
     "babel-preset-env": "^1.6.0",
     "babel-preset-react": "^6.24.1",
-    "bootstrap-sass": "~3.3.6",
+    "bootstrap-sass": "~3.4.0",
     "bootstrap-select": "^1.12.4",
     "browser-bunyan": "^1.3.0",
     "browser-sync": "^2.23.6",

yarn.lock

@@ -1400,9 +1400,9 @@ boom@5.x.x:
   dependencies:
     hoek "4.x.x"
 
-bootstrap-sass@~3.3.6:
-  version "3.3.7"
-  resolved "https://registry.yarnpkg.com/bootstrap-sass/-/bootstrap-sass-3.3.7.tgz#6596c7ab40f6637393323ab0bc80d064fc630498"
+bootstrap-sass@~3.4.0:
+  version "3.4.0"
+  resolved "https://registry.yarnpkg.com/bootstrap-sass/-/bootstrap-sass-3.4.0.tgz#b1c330a56782347f626d31d497fa4aea16b3f99b"
 
 bootstrap-select@^1.12.4:
   version "1.12.4"
@@ -7521,7 +7521,7 @@ react-dom@^16.4.1:
     object-assign "^4.1.1"
     prop-types "^15.6.0"
 
-react-dropzone@^7.0.1:
+react-dropzone@=7.0.1:
   version "7.0.1"
   resolved "https://registry.yarnpkg.com/react-dropzone/-/react-dropzone-7.0.1.tgz#bc76bc1686fb47ed0c8301f968fffa6aecdff47b"
   dependencies: