Extract the constraint-building for joins in JoinAssociation into a separate method to make it easy to change/override (requested by Ernie Miller so that MetaWhere can add to it easily)

Signed-off-by: NSantiago Pastorino <santiago@wyeworks.com>

The controller and resource generators will now automatically produce asset stubs (this can be turned off with --skip-assets). These stubs will use Coffee and Sass, if those libraries are available. [DHH]

as the confirmation validation already adds that attr_accessor

old:
Hash.from_xml("<tag foo='bar'>\n</tag>")
=> {"tag"=>"\n"}

new:
Hash.from_xml("<tag foo='bar'>\n</tag>")
=> {"tag"=>{"foo"=>"bar", "__content__"=>"\n"}

[#6625 state:committed]
Signed-off-by: NSantiago Pastorino <santiago@wyeworks.com>

- Closes #6692
Signed-off-by: NJosé Valim <jose.valim@gmail.com>

This made the isolated test failed on CI server.
Signed-off-by: NXavier Noria <fxn@hashref.com>

Use driver_ujs now that we no longer have to depend on a shared name and insert all prototype dependencies if thats specified

Use driver_ujs now that we no longer have to depend on a shared name and insert all prototype dependencies if thats specified