Single Cell view: got the simulation delay to work again (closes #461).
Some minor cleaning up [ci skip].
User documentation: slight updates to the HelpWindow plugin documentation [ci skip].
User documentation: slight updates to the HelpWindow plugin documentation [ci skip].
Started work on upgrading QScintilla to version 2.8.4 (#464) [ci trip].
Done upgrading QScintilla to version 2.8.4 (closes #464).
Slight improvement to our CMake INITIALISE_PROJECT() macro [ci skip].
Renamed Core::SpinnerWidget to Core::BusyWidget (closes #466).
Some minor cleaning up [ci skip].
Core::BusyWidget: added support for showing the progress of a task (closes #467).

Also some various cleaning ups of Core::BusyWidget.
Some minor cleaning up [ci skip].
CellML Annotation view: improved the retrieval of possible ontological terms (closes #463).
Some minor cleaning up [ci skip].
Qt: upgraded from version 5.3.1 to version 5.3.2 (closes #468).

This also closes issue #383 as a result.
Qt 5: indirectly fixed an issue with moving a QWebView-based dockable window eventually crashing OpenCOR (closes #383).

This is the indirect result of upgrading Qt from version 5.3.1 to
version 5.3.2 (see issue #468).
Slight update to our Travis-CI script following our upgrade to Qt 5.3.2 (#468).
Some minor cleaning up [ci skip].
Some minor cleaning up [ci skip].
Some minor cleaning up [ci skip].
Some minor cleaning up [ci skip].