Web Inspector: "Dock to right" shouldn't be in the settings dialog

Web Inspector: "Dock to right" shouldn't be in the settings dialog
https://bugs.webkit.org/show_bug.cgi?id=76917

Reviewed by Vsevolod Vlasov.

Introduced 'long click-enabled' options for status bar buttons. Made dock/undock one of them.

* inspector/front-end/Images/statusbarButtonGlyphs.png:
* inspector/front-end/StatusBarButton.js:
(WebInspector.StatusBarButton.prototype._clicked):
(WebInspector.StatusBarButton.prototype.set visible):
(WebInspector.StatusBarButton.prototype.makeLongClickEnabled.mouseDown):
(WebInspector.StatusBarButton.prototype.makeLongClickEnabled.mouseUp):
(WebInspector.StatusBarButton.prototype.makeLongClickEnabled):
(WebInspector.StatusBarButton.prototype._showOptions.mouseOver):
(WebInspector.StatusBarButton.prototype._showOptions.mouseOut):
(WebInspector.StatusBarButton.prototype._showOptions.mouseUp):
(WebInspector.StatusBarButton.prototype._showOptions):
* inspector/front-end/UIUtils.js:
(WebInspector.elementDragStart):
(WebInspector.elementDragEnd):
(WebInspector.GlassPane):
(WebInspector.GlassPane.prototype.dispose):
* inspector/front-end/inspector.css:
(.long-click-glyph):
(.long-click-glyph.shadow):
(button.status-bar-item:active:not(.emulate-inactive), button.status-bar-item.emulate-active):
(.alternate-status-bar-buttons-bar):
(.alternate-status-bar-buttons-bar .status-bar-item):
* inspector/front-end/inspector.js:
(WebInspector._createGlobalStatusBarItems):
(WebInspector._createDockOptions.onClick.set else):
(WebInspector._createDockOptions.onClick):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@121843 268f45cc-cd09-0410-ab3c-d52691b4dbfc