AEA.layout: update file to fulfill submission guidelines

- the option draftmodes is optional and must not be hardcoded
- the same is for the harvard package
- some whitespace fixes

lib/layouts/AEA.layout

@@ -1,6 +1,7 @@
 #% Do not delete the line below; configure depends on this
 #  \DeclareLaTeXClass[AEA,amsmath.sty,harvard.sty,multicol.sty,setspace.sty]{article (American Economic Association)}
-# Author : Koji Yokota <yokota@res.otaru-uc.ac.jp>
+# Authors : Koji Yokota <yokota@res.otaru-uc.ac.jp>
+#           Uwe Stöhr <uwestoehr@web.de>
 
 Format 35
 Input stdclass.inc
@@ -10,10 +11,6 @@ Input theorems-ams-extended-bytype.module
 
 Provides amsthm 1
 
-Preamble
-	\usepackage{harvard}
-EndPreamble
-
 NoStyle		Part
 NoCounter		part
 NoStyle		Chapter
@@ -48,9 +45,6 @@ NoStyle		Note*
 NoStyle		Remark*
 NoStyle		Summary*
 
-ClassOptions
-	Other	draftmode
-End
 
 Style ShortTitle
 	Category	FrontMatter
@@ -64,10 +58,10 @@ Style Publication_Month
 	CopyStyle	ShortTitle
 	LatexName	pubMonth
 	Align		Left
-	Margin          Dynamic
-	LabelType       Static
-	LabelString     "Publication Month:"
-	LabelSep        M
+	Margin		Dynamic
+	LabelType	Static
+	LabelString	"Publication Month:"
+	LabelSep	M
 	LabelFont
 	  Color		Red
 	EndFont
@@ -76,19 +70,19 @@ End
 Style Publication_Year
 	CopyStyle	Publication_Month
 	LatexName	pubYear
-	LabelString     "Publication Year:"
+	LabelString	"Publication Year:"
 End
 
 Style Publication_Volume
 	CopyStyle	Publication_Month
 	LatexName	pubVolume
-	LabelString     "Publication Volume:"
+	LabelString	"Publication Volume:"
 End
 
 Style Publication_Issue
 	CopyStyle	Publication_Month
 	LatexName	pubIssue
-	LabelString     "Publication Issue:"
+	LabelString	"Publication Issue:"
 End
 
 Style Abstract