Changes that include connecting line data tips, connecting line selection, and layer management.
Reinstated dblclick handler in .click_background
Changes made so that we make use of layerManager
Improved icon
* Fixes based on code review notes

connecting_line_adornment.js [ Replace string with LayerNames constant. ]
dot_plot_view.js [ In creation of adornments, add shadingLayerName ]
layer_manager.js [ No longer descends from SC.Object. in moveElementFromTo, if fromLayer and ToLayer are the same, bail immediately. Use DG.logError in testValidity. ]
line_data_tip.js [ Use localizable, parameterized string in getDataTipText.
plot_adornment.js [ In destroy, don’t pretend to know which layer elements are in. Instead ask layerManager to remove them. ‘layer’ is no longer cacheable. ]
plot_background_view.js [ Added intervalShading layer for use by interval adornments. Cleaned up initLayerManager. ]
plot_utilities.js [ Added comment to doHideRemoveAnimation. ]
plot_view.js [ In drawData, removed redundant call to removeElement. In updateSelection, removed unused local variable. In hideDataTip, check for existence of dataTip. In plottedCountChanged, replace layer name string with constant from LayerNames. ]
plotted_average_adornment.js [ Adornments that involve shading, now place the rectangles used for shading in the kShadingLayer layer. ]
point_data_tip.js [ in getDataTipText, protect against possibility that cases don’t yet exist. Remove hide method as unnecessary override. ]
raphael_base.js [ Changes to accommodate LayerManager as no longer SC.Object. Remove initLayerManager call from didCreateLayer as unnecessary given that we use lazy instantiation. ]
raphael_layer.js [ Fix bug in contains method. ]
scatter_plot_view.js [ In updateSelection, call sc_super first instead of last ]
strings.js [ Added DG.DataTip.connectingLine ]
tool_tip.js [ ‘layer’ property now not cacheable. ]
Build 0222
Build 0223
Fix Buildfile
Fix config.js
Update README.md to include initial build instructions.
Update README.md
Update README.md
[From Bill] In animateFromTransferredPoints(), attach the termination callback to the first rendered point rather than trying to determine which is the last rendered point.
Fix sc_require() statements
In movableLineChanged(), eliminate unused variable.
Eliminate with JSHint warnings (with statement).
Build 0224
Removed the header setting because the browser automatically sends the Basic Auth info along with subsequent requests already even with ajax requests.
Merge branch 'origin/master'
Build 0225