Big update

-rewrote ZUI framework to abandon Processing.js and to switch to native
Canvas
-ZUI framework now supports event-handling for ViewObjects
-modified ChromosomeView and SpeciesView to use the new ZUI framework
-added various useful methods to classes under the Eplant namespace
-added tooltip toggle option
-added view change animation toggle option
-switched to jQuery UI dialogs for popups in ChromosomeView
-user annotations are now created via a modern user-friendly modal
dialog
-loaded genes can now be assigned tags via either the user annotation
dialog or the annotation popup in the ChromosomeView
-improved overall object-oriented structures