* Add main Toolbar

Some coding convention work
 * Add 'Navigation' menu für keyboard navigation actions. Mainly usefull to look up shortcuts... And it saves a call to 'addAction(action)' for those actions, as their shortcut aren't registered otherwise.
 * Add 'Navigation' toolbar for keyboard navigation actions.
 * Add tooltips to keyboard navigation actions.
 * Rename initKAction() method to setupActions(); towards best practice for all of KDE Games...
 * use 'actionCollection()->add<QAction>(name, this, SLOT(slotName()))' style action creation. This seems to be the preferred way now.
 * Added some comments

Some 'use available technologies' work
 * Use XMLGui Action states for enabling/disabling 'undo'
 * Move icon, shortcut, whatsThis and text declarations for actions into <ActionProperties> in the xxxui.rc file. Seperates Usablility and UI consistency concerns from coding. Not sure if the i18n work nice, though. 

Please report if I've broken something;-)


svn path=/trunk/KDE/kdegames/klines/; revision=667127