Add hover effect and slim class to dev assets and apply in signature list

Introduced a new SCSS file to handle hover effects on rows and added the ability to remove bottom margins with a "slim" class. Updated various twig templates to utilize these new styles for better visual feedback and alignment.

src/Bundle/ChillMainBundle/Resources/public/chill/chillmain.scss

@@ -31,6 +31,8 @@
 // Specific templates
 @import './scss/notification';
 
+@import './scss/hover.scss';
+
 /*
  *    BASE LAYOUT POSITION
  */

src/Bundle/ChillMainBundle/Resources/public/chill/scss/hover.scss

@@ -0,0 +1,11 @@
+
+
+.row.row-hover {
+    padding: 0.3rem;
+
+    &:hover {
+        background-color: $gray-100;
+        border-top: 1px solid $gray-400;
+        border-bottom: 1px solid $gray-400;
+    }
+}

src/Bundle/ChillMainBundle/Resources/public/chill/scss/record_actions.scss

@@ -17,6 +17,10 @@ ul.record_actions {
         display: inline-block;
     }
 
+    &.slim {
+        margin-bottom: 0;
+    }
+
    &.column {
       flex-direction: column;
    }