[FIX] add the 'lazy' parameter to the horrible inherited read_group method in account report entries (addon account)
[FIX] add the new 'lazy' keyword argument to the read_group calls inherited in several models (addons calendar, idea, note)
[FIX] fix to the previous fix: it should correctly calls the readgroup methods now (addons calendar, idea)
[MERGE] merge from trunk
[MERGE] merge from trunk
[MERGE] merge from trunk
[MERGE] merge from trunk
[MERGE] readgroup signature has changed, so addons inheriting and modifying read_group need to be changed to make sure they call their parent's read_group with the correct signature