Added Auckland to Bay of Islands trip planner,
because tidal streams are referred to Auckland tides.
Remember to download tide predictions for Auckland.
Added Bay of Island trip planning notes.
Downloaded tide tables for Auckland 2013--2015.
Must create trips after tides (ie. last) and delete trips first.
First attempt at trigger to calculate secondary tide events...trigger runs, but does not do the right thing.
Removed generated database from version control, as it only takes a second or two to re-generate.