* fix GroupComboBox's drop down arrow isn't centered by correct padding
* merge #translateLine of navToolbar and ScanPopup
* special boarder handling when using #searchPane
The new History Pane features proper mouse and keyboard navigation,
multiple selection and ability to remove the selected entries,
plus a dynamic context menu. Additionaly, the History's size is now
configurable in Preferences.
Use Ctrl+H to show/hide the History Pane.
History Pane's titlebar can be styled via #historyPaneTitleBar, e.g.:
/* Colored header for the History Pane */
background: lightsteelblue;
margin: 2px;
}
Closes #162: Make History sidebar independent from the Search Pane
Closes #159: "Send to main window" button from Pop-Up window does nothing when History is shown
Closes #158: Preserve History mode after restart
Closes #157: History with new UI: New words are not added when History is shown
Closes #156: History with new UI: Extra Groups widget in History is shown
Closes #155: History with new UI: Arrow keys navigation in History doesn't work
Closes #154: History with new UI: DEL key does not delete the current history entry
Users now have a choice:
* The new way: The field to enter words located like in all browsers, in the toolbar.
* The old way: to search in the sidebar.
Both UI modes are supported and can be switched between via View -> Search Pane menu.
* Status Bar now available for Scan Popup window as well.
* Fixed #13: Eliminated modal box when sound is not available:
Instead of modal dialog box we now show the status bar message,
with error icon, thus making it visible but not disruptive.
* Proper handling of status bar images.
* Styling of the status bar in both modes
(in Mani Window and in Popup Window).
Now the status bar behavior is much more reliable on X11 systems, no more
lags when moving GoldenDict window around or when resizing it. Works
better with compositing window managers as well.
Also, the new status bar also supports images, which is good for
warnings and error messages.
The status bar is fully styled and can change its appearence
based on user's CSS, if needed.
It is a separate detacheable pane, which could also be enabled/disabled,
it tracks the current tab's contains, and lists those dictionaries that
contributed their content to the current translation.
Clicking on dictionary name jumps to the appropriate article from
this dictionary, which improves the navigation flow.
The Dictionaries Pane:
* Shows both dictionaries' names and icons.
* Does not consume resources when hidden.
* Properly styled.
* Properly handles app-wide shortcuts
(Esc, Ctrl-L, Alt-D, Enter, Alt-Up/Down).
