Add LGPL v3 licence notices.

Add LGPL v3 licence notices.

Followed directions listed here:
http://www.gnu.org/licenses/gpl-howto.html

* COPYING: This file is a copy of the GPL v3.
* COPYING.LESSER: This file is a copy of the LGPL v3.
* src/main/java/org/glom/web/client/GlomDocument.java: Add licence
notice.
* src/main/java/org/glom/web/client/GlomTable.java: Add licence
notice.
* src/main/java/org/glom/web/client/LayoutList.java: Add licence
notice.
* src/main/java/org/glom/web/client/LayoutListDataProvider.java: Add
licence notice.
* src/main/java/org/glom/web/client/LibGlomService.java: Add licence
notice.
* src/main/java/org/glom/web/client/OnlineGlom.java: Add licence
notice.
* src/main/java/org/glom/web/server/LibGlomServiceImpl.java: Add
licence notice.