- make template compilable
- update it according to the latest AEA guidelines
- add 4 missing styles to the layout:
* \keywords
* \JEL
* figurenotes environment
* tablenotes environment
also for trunk:
- AEA.lyx: add info how to install the AEA LaTeX class
- iop-article.lyx: some typos
git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@39085 a592a061-630c-0410-9148-cb99ea01b6c8