Set scrollbar colors as global styles (#1484)

* Setting global webkit-scrollbar styles

Signed-off-by: Alex Andreev <alex.andreev.email@gmail.com>

* Removing usage of custom-scrollbar mixin

Signed-off-by: Alex Andreev <alex.andreev.email@gmail.com>

* Set overflow:auto on .Table

Signed-off-by: Alex Andreev <alex.andreev.email@gmail.com>

* Fixing .drawer-content paddings

Signed-off-by: Alex Andreev <alex.andreev.email@gmail.com>

* Cleaning up

Signed-off-by: Alex Andreev <alex.andreev.email@gmail.com>

src/renderer/components/dock/pod-logs.scss

@@ -3,12 +3,7 @@
   --overlay-active-bg: orange;
 
   .logs {
-    @include custom-scrollbar;
-
-    // fix for `this.logsElement.scrollTop = this.logsElement.scrollHeight`
-    // `overflow: overlay` don't allow scroll to the last line
     overflow: auto;
-
     position: relative;
     color: $textColorAccent;
     background: $logsBackground;

src/renderer/components/dock/terminal-window.scss

@@ -5,17 +5,7 @@
   margin-left: $padding * 2;
   margin-top: $padding * 2;
 
-  .theme-light & {
-    .xterm-viewport {
-      @include custom-scrollbar(dark);
-    }
-  }
-
   > .xterm {
     overflow: hidden;
   }
-
-  .xterm-viewport {
-    @include custom-scrollbar;
-  }
 }