#1119 - Multistore feature

Signed-off-by: Carlos Escribano Rey <carlos@markhaus.com>
#1131 - Unify JSON config

Signed-off-by: Carlos Escribano Rey <carlos@markhaus.com>
#1131

- Better config info.
- Enhanced SQL queries.
- Fixed admin interface (multi and single shops).

Signed-off-by: Carlos Escribano Rey <carlos@markhaus.com>
Merge branch 'refs/heads/multistore'

Signed-off-by: Carlos Escribano Rey <carlos@markhaus.com>

Conflicts:
	config.php
	dfTools.class.php
	feed.php