2D Charts improvements

[jzy3d]

Features

• Layout : Fill parent panel, ideally define in terms of left/right/top/bottom border margin
• Layout : Tick placement centered, without the processing usual 3D placement left/side
• Layout : Tick line inside or outside (see chart.view2d() which disable ticks)
• Layout : Reverse direction of Y axis values (left for later)
• Layout : Y axis title should flip 90°
• Layout : Show logo on left bottom side
• Layout : ensure colorbar margins are relevant with axis margins
• Layout : ensure colorbar layout remains the same on EmulGL and Native (EmulGL case will fail)
• Layout : ensure HiDPI is properly supported (left for later 2D charts should have a consistent layout when switching from HiDPI to no HiDPI #268)
• Layout : allow image logo to be displayed on any corner without covering tick labels
• Layout : allow SVG logo (left for later Allow rendering java.awt.Shape in post renderers to show logos #270)
• API : a common chart.getLayout() (left for later)
• Mouse : should be disabled when view is 2D

Results

Bugs

• [EmulGL] 2D scatter plots have their axis displayed twice #246
• BenchmarkPlot on Native AWT does not display content
• BenchmarkPlot on EmulGL does display properly for range 1-100 but not for 1-500
• Tutorial chart2D demo with non downsizing layout on native charts

Code cleanup

• Delete former Axis2D, Chart2D, etc classes (still referenced by the 2D tutorials)
• Remove AWTColorbarImageGenerator.MIN_BAR_WIDTH

Tests

• Verify 2D margin on EmulGL and Native with ITTests
• Verify 2D margins remains relevant when shifting from HiDPI to non HiDPI screen using ManualTests or ITTests with changing HiDPI setting (left for later 2D charts should have a consistent layout when switching from HiDPI to no HiDPI #268)

[jzy3d]

A 2D chart with layout debugger enabled

[jzy3d]

Other API changes

• deleted IAxisLayout, only using AxisLayout class
• few fixes on BoundingBox2d()

[jzy3d]

#278