diff --git a/sample-app/yarn.lock b/sample-app/yarn.lock
old mode 100755
new mode 100644
index f6b7dd00..c4f9d026
--- a/sample-app/yarn.lock
+++ b/sample-app/yarn.lock
@@ -1825,14 +1825,6 @@ boolbase@^1.0.0, boolbase@~1.0.0:
   resolved "https://registry.yarnpkg.com/boolbase/-/boolbase-1.0.0.tgz#68dff5fbe60c51eb37725ea9e3ed310dcc1e776e"
   integrity sha1-aN/1++YMUes3cl6p4+0xDcwed24=
 
-bootstrap@4.0.0-alpha.6:
-  version "4.0.0-alpha.6"
-  resolved "https://registry.yarnpkg.com/bootstrap/-/bootstrap-4.0.0-alpha.6.tgz#4f54dd33ac0deac3b28407bc2df7ec608869c9c8"
-  integrity sha1-T1TdM6wN6sOyhAe8LffsYIhpycg=
-  dependencies:
-    jquery ">=1.9.1"
-    tether "^1.4.0"
-
 brace-expansion@^1.1.7:
   version "1.1.11"
   resolved "https://registry.yarnpkg.com/brace-expansion/-/brace-expansion-1.1.11.tgz#3c7fcbf529d87226f3d2f52b966ff5271eb441dd"
@@ -2731,9 +2723,9 @@ css-url-regex@^1.1.0:
   integrity sha1-g4NCMMyfdMRX3lnuvRVD/uuDt+w=
 
 css-what@2.1, css-what@^2.1.2:
-  version "2.1.2"
-  resolved "https://registry.yarnpkg.com/css-what/-/css-what-2.1.2.tgz#c0876d9d0480927d7d4920dcd72af3595649554d"
-  integrity sha512-wan8dMWQ0GUeF7DGEPVjhHemVW/vy6xUYmFzRY8RYqgA0JtXC9rJmbScBjqSu6dg9q0lwPQy6ZAmJVr3PPTvqQ==
+  version "2.1.3"
+  resolved "https://registry.yarnpkg.com/css-what/-/css-what-2.1.3.tgz#a6d7604573365fe74686c3f311c56513d88285f2"
+  integrity sha512-a+EPoD+uZiNfh+5fxw2nO9QwFa6nJe2Or35fGY6Ipw1R3R4AGz1d1TEZrCegvw2YTmZ0jXirGYlzxxpYSHwpEg==
 
 cssdb@^4.3.0:
   version "4.3.0"
@@ -5636,11 +5628,6 @@ joi@^11.1.1:
     isemail "3.x.x"
     topo "2.x.x"
 
-jquery@>=1.9.1:
-  version "3.4.0"
-  resolved "https://registry.yarnpkg.com/jquery/-/jquery-3.4.0.tgz#8de513fa0fa4b2c7d2e48a530e26f0596936efdf"
-  integrity sha512-ggRCXln9zEqv6OqAGXFEcshF5dSBvCkzj6Gm2gzuR5fWawaX8t7cxKVkkygKODrDAzKdoYw3l/e3pm3vlT4IbQ==
-
 js-base64@^2.1.8:
   version "2.5.1"
   resolved "https://registry.yarnpkg.com/js-base64/-/js-base64-2.5.1.tgz#1efa39ef2c5f7980bb1784ade4a8af2de3291121"
@@ -9505,11 +9492,6 @@ test-exclude@^4.2.1:
     read-pkg-up "^1.0.1"
     require-main-filename "^1.0.1"
 
-tether@^1.4.0:
-  version "1.4.5"
-  resolved "https://registry.yarnpkg.com/tether/-/tether-1.4.5.tgz#8efd7b35572767ba502259ba9b1cc167fcf6f2c1"
-  integrity sha512-fysT1Gug2wbRi7a6waeu39yVDwiNtvwj5m9eRD+qZDSHKNghLo6KqP/U3yM2ap6TNUL2skjXGJaJJTJqoC31vw==
-
 text-table@0.2.0, text-table@^0.2.0:
   version "0.2.0"
   resolved "https://registry.yarnpkg.com/text-table/-/text-table-0.2.0.tgz#7f5ee823ae805207c00af2df4a84ec3fcfa570b4"