triggers panel: redesign, unify with Alert List panel

src/sass/_variables.dark.scss

@@ -2,17 +2,18 @@
 // -------------------------
 $black:            #000;
 $dark-1:           #141414;
-$dark-2:           #1f1d1d;
-$dark-3:           #292929;
+$dark-2:           #1f1f20;
+$dark-3:           #262628;
 $dark-4:           #333333;
 $dark-5:           #444444;
 $gray-1:           #555555;
-$gray-2:           #7B7B7B;
+$gray-2:           #8e8e8e;
 $gray-3:           #b3b3b3;
 $gray-4:           #D8D9DA;
 $gray-5:           #ECECEC;
 $gray-6:           #f4f5f8;
 $gray-7:           #fbfbfb;
+$gray-blue:				 #292a2d;
 
 $white:            #fff;