border-right on bookmarkFolderList shows only for the number of bookmarks that are available

[srirambv]

Did you search for similar issues before submitting this one?
Yes

Describe the issue you encountered:
The border-right on bookmark FolderList is shown only for the number of bookmarks that are created. This looks bad when you only have one or two bookmarks

Expected behavior:
By default the border-right should be shown till the end of the browser window

• Platform (Win7, 8, 10? macOS? Linux distro?):
  All
• Brave Version:
  0.12.6 Preview 2
• Steps to reproduce:
  1. Open about:bookmarks
  2. Have only two or three bookmarks, the border looks odd
• Screenshot if needed:
  Current
  

Expected

• Any related issues:
  border-right on bookmarkFolderList should be moved to div inside organizeView #4866

cc: @bsclifton

[luixxiul]

I think that's been reverted to the above once