Add some debug output

lib/domain/libimagdiary/src/diary.rs

@@ -82,6 +82,7 @@ impl Diary for Store {
 
     // Get an iterator for iterating over all entries
     fn entries(&self, diary_name: &str) -> Result<DiaryEntryIterator> {
+        debug!("Building iterator for module 'diary' with diary name = '{}'", diary_name);
         self.retrieve_for_module("diary")
             .map(|iter| DiaryEntryIterator::new(self, String::from(diary_name), iter))
             .chain_err(|| DEK::StoreReadError)

lib/domain/libimagdiary/src/is_in_diary.rs

@@ -43,6 +43,7 @@ impl IsInDiary for Entry {
 impl IsInDiary for StoreId {
 
     fn is_in_diary(&self, name: &str) -> bool {
+        debug!("Check: is in diary '{}'", name);
         self.is_in_collection(&["diary", name])
     }