change [x for x in y if x] to filter(None, y)
change [f(x) for x in y] to map(f, x)
change [x for x in y] to list(y)
These changes reduce source code size and complexity and produce some minor performance gains
svn: r14104
* data/gramps.schemas.in: default transactions to off
* src/Config/_GrampsConfigKeys.py: default transaction to off
* src/Editors/_EditFamily.py: remove dead code
* src/plugins/DetDescendantReport.py: remove dead code
svn: r7631
* src/EditRepository.py: modified to use find_backlink_handles and fixed subtle bug
* src/RelLib/_Source.py: added reporef_list to referent object lists so that backref
are put in reference_map
* test/GrampsDb/GrampsDbBase_Test.py: added unittest for source/reference backlinks
* test/GrampsDb/GrampsDbTestBase.py: added unittest for source/reference backlinks
svn: r5616