[LyX/master] Decrease and unify indentation of beamer frame content.

[Juergen Spitzmueller]

commit 1663dbcbcfacf15d88558783660ebae418394c67
Author: Juergen Spitzmueller <sp...@lyx.org>
Date:   Fri Nov 6 08:34:00 2015 +0100

    Decrease and unify indentation of beamer frame content.

diff --git a/lib/layouts/beamer.layout b/lib/layouts/beamer.layout
index b8390d3..f261134 100644
--- a/lib/layouts/beamer.layout
+++ b/lib/layouts/beamer.layout
@@ -417,10 +417,11 @@ End
 
 Style Frame
   Category         Frames
-  Margin           Dynamic
+  Margin           First_Dynamic
+  LeftMargin       xx
   LatexType        Environment
   LatexName        frame
-  LabelString      "Frame"  
+  LabelString      "Frame"
   TocLevel         4
   KeepEmpty        1
   NextNoIndent     1