<Updated boostrap gem> (#288)

Gemfile

@@ -54,7 +54,7 @@ gem 'omniauth-bn-launcher', '~> 0.1.0'
 gem 'bigbluebutton-api-ruby'
 
 # Front-end.
-gem 'bootstrap', '~> 4.1.1'
+gem 'bootstrap', '~> 4.1.3'
 gem 'tabler-rubygem'
 
 # For detecting the users preferred language.

Gemfile.lock

@@ -50,7 +50,7 @@ GEM
     bigbluebutton-api-ruby (1.7.0)
       xml-simple (~> 1.1)
     bindex (0.5.0)
-    bootstrap (4.1.1)
+    bootstrap (4.1.3)
       autoprefixer-rails (>= 6.0.3)
       popper_js (>= 1.12.9, < 2)
       sass (>= 3.5.2)
@@ -171,7 +171,7 @@ GEM
     parser (2.5.1.0)
       ast (~> 2.4.0)
     pg (0.21.0)
-    popper_js (1.12.9)
+    popper_js (1.14.3)
     powerpack (0.1.2)
     public_suffix (3.0.3)
     puma (3.11.4)
@@ -320,7 +320,7 @@ DEPENDENCIES
   action-cable-testing
   bcrypt (~> 3.1.7)
   bigbluebutton-api-ruby
-  bootstrap (~> 4.1.1)
+  bootstrap (~> 4.1.3)
   byebug
   coffee-rails (~> 4.2)
   coveralls