small hack to make disabling the dynconn layer prevent the computation and show empty string in identification window

Implement WB-633 : New requirements for updating of connectivity data: (1) A second checkbox that enables dynamic connectivity has been added to Overlay Toolbox --> Connectivity.  Dynamic connectivity files are only available in the Overlay --> Layers section if this checkbox is checked; (2) Checkbox labeled "On" has been changed to "Load" on Overlay --> Toolbox; (3) A preference has been added for enabling dynamic connectivity data from data-series file on Preferences Misc tab; (4) Old scenes will default to dynamic connectivity on.  Name of dynamic connectivity file in Overlay --> Layers and Overlay --> Connectivity is now prefixed with "dynconn".

Resolve WB-643: Loading a scene causes contained files to default to "in spec":  The "in spec" status is now preserved when loading a scene.  The name of the spec file within the scene must match the name of the current spec file and the data files are matched using their absolute paths.

Resolve WB-644: Timecourse on/off status from charts not saved to scenes: Restoration of the chart selection status has been fixed.

Resolve WB-642 Adjusting the color bar position by typing or arrows does not work.  When annotation color bar placement is Automatic, any requests to change color bar's position were ignored.  Now, if the user attempts to move the color bar, change the color bar's positioning mode from Automatic to Manual so that the color bar will move.

Resolve WB-641 Overlay and map settings dialog precision issue: In the statistics section of the dialog, the width was fixed for the numeric characters so there was insufficient space when the values were large and clipped at the left side.  The space for the values will now shrink and expand as needed so that the numeric values are fully visible.

set all of pixdim[] to 1 by default, doesn't change our warnings, better nifti conformance, reduces warnings from other software

Resolve WB-639: (Forgot to add ZipSceneFileDialog to repository before committing) Added Zip Scene File Dialog for zipping a a scene file and its data files.  Dialog is launched using new "Zip" button on the Scene File Dialog.

Resolve WB-639: Added Zip Scene File Dialog for zipping a a scene file and its data files.  Dialog is launched using new "Zip" button on the Scene File Dialog.

Changed caret preferences: The default image capture type is 'render pixmap' which uses an offscreen pixmap for creating the image.  However, Linux systems have problems with the 'render pixmap' so the default for Linux has been changed to 'grab framebuffer'.  This change will only affect new users who have not run Workbench and thus do not yet have a preferences file.

Corrected VolumeFile::isMappedWithRGBA().  It was incorrectly returning true for any volume file type.

For copying of annotations between files, added option to copy only annotations that are selected in the window.

Fixed drawing voxels as cubes in All View so that it functions with volumes in any orientation (not just LPI).  Also disabled lighting in drawing voxels as cubes when a single slice is drawn.

WB-628 Ability to adjust NIFTI sform dynamically in wb_view: It is partially implemented but there is just no time to work on it.

Changed 'ALL' view mode's orthogonal slice drawing to use the culled slice drawing that works for volumes in all orientations.  The original non-culled orthogonal slice drawing does work for volumes non-LPI oriented volumes.

There were 'debugFlag' variables that were both local to a function and global to the file.  The 'debugFlag' local to the function was removed.

Added creation of a "landmark transform matrix" to Matrix4x4.  Given three control points (paired coordinates in two 3D systems), the landmark transform defines a transformation between the two coordinate systems.  It is being used to transform a 2D image into a volume file.

Bug Fix: Oblique volume drawing was not working for a volume file that contained a single slice (K-dim => 1).  Problem was traced to VolumeFile::interpolateValue().  CUBIC and TRILINEAR interpolation modes require two slices to function since they interpolate between two slices.   Now VolumeFile::validateMembers() examines the dimensions and will set a flag 'm_singleSliceFlag' if any of the dimensions are one.  VolumeFile::interpolateValue() will override the interpolate mode parameter to ENCLOSING_VOXEL if the 'm_singleSliceFlag' is set.

For conversion of image to volume, add selection for creating Grayscale or RGB to Convert Image File to Volume File dialog.

Changed image file conversion to volume file to create an RGB volume (previously created RGBA volume).