Inconsistent type & variable naming of plugins

Both title and menu are WckTitlePlugin & wtp and WckMenuPlugin & wmp, respectively. However, buttons are WBPlugin & wb. We should probably rename either

1. WBPlugin to WckButtonsPlugin & wb to wbp, or;
2. WckTitlePlugin & wtp to WTPlugin & wt and WckMenuPlugin & wmp to WMPlugin & wm.

Thoughts?