Make it clear that smart cursor color is only for box cursors by disabling the setting when a different cursor type is selected. Also change the verbiage and move controls around in the prefs panel to make more room for the longer string. Issue 6343

Fix a bug where we tried to remove the window's first responder when a popover closes, but it was done wrong because in awakeFromNib the view did not yet have a window so the workaround was a no-op. Not sure if this used to work and then something changed, breaking it. The new code should be more robust because it gets the window from the color well, which we know must exist when its popover will close. This accounted for 20% of crashes in 3.0.5.

If this is enabled, underlining will always use the set color,
independent of the color that the character itself is displayed with.

Author:    Robin Sommer <robin@icir.org>

Merge in code from hotkeyWindowsInPanels branch. Support multiple hotkey windows. Update the shortcut input view. Add support for floating panel terminal windows.

Fix a crash where some preference panel view controllers remained allocated after the pref panel was released. There were cyclic references in various blocks. The fix for most of them is to remove the blocks in PreferenceInfo when the window closes. A color well block also had a cycle, and I fixed it by using an unsafe unretained pointer. Blocks are non-arc code are scary.

Fix a crash when you open the color popover, close the color popover, and switch to another app. See comment for details.

Also removes references to -[NSColor CGColor] which only exists in 10.10, and changes the color gallery URL to https.

Move source into sources/ directory. Delete a few unused images in the process and fix a reference to an Aqua image in FindView

Add pref for link color. Assign default values to all colors. Tolerate loading color presets with missing entries, subbing default color in (needed for link since old presets won't have that).

Add cursor guide toggle and color to profiles color prefs. Reorganize that page to have more structure.

Add cursor boost feature, which mutes (blends with default background color) all colors except the cursor

Define PreferenceInfo.observer and change code to use it. Post a notification when a change is made to the shared panel to update the control on the sessions panel.