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/themes/lens-dark.json

@@ -107,6 +107,7 @@
     "selectOptionHoveredColor": "#87909c",
     "lineProgressBackground": "#414448",
     "radioActiveBackground": "#36393e",
-    "menuActiveBackground": "#36393e"
+    "menuActiveBackground": "#36393e",
+    "scrollBarColor": "#5f6064"
   }
 }

src/renderer/themes/lens-light.json

@@ -39,13 +39,13 @@
     "helmImgBackground": "#e8e8e8",
     "helmStableRepo": "#3d90ce",
     "helmIncubatorRepo": "#ff7043",
-    "helmDescriptionHr": "#41474a",
+    "helmDescriptionHr": "#dddddd",
     "helmDescriptionBlockqouteColor": "#555555",
     "helmDescriptionBlockqouteBorder": "#8a8f93",
     "helmDescriptionBlockquoteBackground": "#eeeeee",
     "helmDescriptionHeaders": "#3e4147",
     "helmDescriptionH6": "#6a737d",
-    "helmDescriptionTdBorder": "#47494a",
+    "helmDescriptionTdBorder": "#c6c6c6",
     "helmDescriptionTrBackground": "#1c2125",
     "helmDescriptionCodeBackground": "#ffffff1a",
     "helmDescriptionPreBackground": "#eeeeee",
@@ -108,6 +108,7 @@
     "selectOptionHoveredColor": "#ffffff",
     "lineProgressBackground": "#e8e8e8",
     "radioActiveBackground": "#f1f1f1",
-    "menuActiveBackground": "#e8e8e8"
+    "menuActiveBackground": "#e8e8e8",
+    "scrollBarColor": "#bbbbbb"
   }
 }