* In Person, add event_ref_list to get_citation_child_list (therefore it is no longer needed in get_handle_referents)
* Similarly in Family, add event_ref_list to get_citation_child_list
* Enhance upgrade to add upgrade of event_ref_list for person and family
* Add has_citation_reference, replace_citation_references and remove_citation_references to EventRef
* Change name of remove_citation_refs to remove_citation_references to be consistent with has_citation_reference (singular) and replace_citation_references
Fix editcitation because it was displaying the wrong privacy button for sources.
Also remove FIXME for editcitation for db signal connect, because comment explains why it is not needed.
svn: r18469
Add note to upgrade information dialogue box to suggest running the tool.
Fixes to Person and Family for get citation child list for merging citations.
svn: r18228
* Updated merge Sources
* Implemented undo-redo for citations (revision 18069 had only added citations to the undo-redo list, not acted on that types of element)
* Fixed embedded lists for some of the object type editors that were done in Rev 18069
* Modified EditCitation so the source parameter is optional
* Added svn properties for all /src/Merge/merge*.py modules
* Added support for EditCitation from backreflist.py
svn: r18085
Added Citations to undo-redo feature.
Moved Citation view within navigation pane to below Sources.
Removed useless edit button from sourcebackreflist.
Fixed default bottombar gramplets for citations.
svn: r18069
* Modified Event object to include references to Citations
* Implemented database upgrade for Events (upgrade for Media had already been done)
* Enhanced database upgrade to do backlinks
* Modified Media object to remove sourceref
* Implemented citations bottombar gramplet
* Some minor fixes and improvements
svn: r18054
* Changed database to introduce Citations
* Introduced new Citation Primary object and CitationBase (equivalent to CitationRef) child object
* Implemented CitationTreeModel and CitationListModel
* Implemented CitationTreeView and CitationListView for new citation views in the navigator
* Implemented EditCitation which is used both for the citation views in the navigator and for the citations of an object
* Implemented the CitationEmbedList to display the citations of an object
* Modified the bottom bar gramplets to support citations
* Implemented the citation selector.
* Modified Media object to include references to Citations
* Initial work on deleting citations
svn: r17960
bsddbtxn.py -- Wrapper for BSDDB DBTxn to support context manager protocol
txn.py -- GrampsDbTxn class to manage atomic transactions
write.py -- GrampsDbWrite class for read/write databases
read.py -- GrampsDbRead class for read-only databases
undoredo.py -- GrampsDbUndo class to manage the undo database
upgrade.py -- Helper module for upgrading a database at open time
svn: r13078
