Remove "Create collection tree from albums" action

Signed-off-by: Christophe <chris.chapuis@gmail.com>
Fix filtering of a flow list

Signed-off-by: Christophe <chris.chapuis@gmail.com>
Fix list of collections (first item is duplicated)

Signed-off-by: Christophe <chris.chapuis@gmail.com>
Move TODO to github's Wiki

Signed-off-by: Christophe <chris.chapuis@gmail.com>
Fixed Move Collection action

Signed-off-by: Christophe <chris.chapuis@gmail.com>