delete lumi based MEs when the LS processing is over
move LS histo removal in mergeAndResetMEsLuminositySummaryCache
add function markForDeletion to DQMStore
shrink down the markForDeletion function
fix invalid iterator
move markedToDelete and markToDelete to be private in the MonitorElement class
added a comment to the markToDelete method
Merge pull request #5682 from deguio/deleteMEafterWriting_v3

Delete ME after writing