Tags should be ordered alphabetically in the Main.Tags page

The following query fixes it:

#set($sql = "select distinct elements(prop.list) from BaseObject as obj, DBStringListProperty as prop where obj.className='XWiki.TagClass' and obj.id=prop.id.id and prop.id.name='tags' order by 1 asc")

instead of

#set($sql = "select distinct elements(prop.list) from BaseObject as obj, DBStringListProperty as prop where obj.className='XWiki.TagClass' and obj.id=prop.id.id and prop.id.name='tags'")