* ParameterSlider: added possibility to change rotary fill colour.
* CAR gain slider: changed rotary fill colour.

* Added custom audio processor editor for CAR plugin - CAREditor;
* Added buttons to switch between "Reference" and "Affected" channels;
* CAR processor some minor changes;
* Some minor changes in GenericEditor class which provide more
  possibilities for plugins (e.g. plugins can implement their own
  resized() methods, etc.);
* Added UIUtilities header file in which we can include any
  UI components/utilities which will be useful for easier plugin
  creation.

* Since "Small text" renders very bad, without any hinting, we replace
  it by "Default" font.  And also "Default" font is much more suitable
  for Material Design.
* Adjusted font sizes.

On OS X, load plugin bundles from application bundle's PlugIns directory.  Improved error handling in PluginManager.

On OS X, copy Rhythm-related files to the application bundle's Resources folder, and use the bundled copies at run time

* Adjusted positions for play, record, master clock components;
* Adjusted positions for CPU and Disk meter components;
* Stylystic fixes.

* Implemented sliders' material lookAndFeel;
* Material lookAndFeel have been applied to sliders;
* Improved UI layout for panel.
* Adjusted positioning of elements during resizing.
* New icon for "Mute" button;

When double clicking on a channel to set fullscreen, the channel height
was set to 0 because the textbook wasn’t set to a correct selected
index. This now gets the value from the text, so it should work
regardless of how the value was entered.

Fixed: Changing data directory in GUI did not take effect if a recording had been started (and stopped) before. Only the first directory before the first recording was used. Fixed: EventBroadcaster was linking to Debug version of open-ephys.lib in Release mode

added functions getRecordingNumber and getExperimentNumber to CoreServcies. Extended NetworkEvents plugin to send this upon request

Fixed: Changing data directory in GUI did not take effect if a recording had been started (and stopped) before. Only the first directory before the first recording was used. Fixed: EventBroadcaster was linking to Debug version of open-ephys.lib in Release mode

- Also, changed Clock divider level: label to Clock divide ratio:
- Also, clock divide settings are now serialized to the configuration
  XML during a settings save.

- Sync signal, wired to BNC out with the update rhd2000.bit, can be set
  to a multiple of the sample clk period using the RHD2000Editor
- This commit corresponds to this pull request:
  https://github.com/open-ephys/rhythm/pull/11

SpikeDetector now sets electrodeID on spike events.  SpikeDetectorEditor now correctly initializes the selected electrode.