ui review and edited

Gemfile.lock

@@ -40,13 +40,8 @@ GEM
       tzinfo (~> 1.1)
     aescrypt (1.0.0)
     arel (8.0.0)
-    autoprefixer-rails (7.1.1.2)
-      execjs
     bcrypt (3.1.11)
     bindex (0.5.0)
-    bootstrap (4.0.0.alpha6)
-      autoprefixer-rails (>= 6.0.3)
-      sass (>= 3.4.19)
     bootstrap-datepicker-rails (1.6.4.1)
       railties (>= 3.0)
     bootstrap-daterangepicker-rails (0.0.8)
@@ -118,6 +113,8 @@ GEM
       nokogiri (>= 1.5.9)
     mail (2.6.6)
       mime-types (>= 1.16, < 4)
+    material_icons (2.2.1)
+      railties (>= 3.2)
     method_source (0.8.2)
     mime-types (3.1)
       mime-types-data (~> 3.2015)
@@ -260,7 +257,6 @@ PLATFORMS
 DEPENDENCIES
   aescrypt
   bcrypt (~> 3.1.7)
-  bootstrap (~> 4.0.0.alpha3)
   bootstrap-datepicker-rails
   bootstrap-daterangepicker-rails
   byebug
@@ -280,6 +276,7 @@ DEPENDENCIES
   jquery-ui-rails
   kaminari (~> 1.0.1)
   listen (~> 3.0.5)
+  material_icons
   momentjs-rails
   mysql2 (>= 0.3.18, < 0.5)
   nested_form