rebuild ui with bootstrap

divide a model into in/out parts
simple js mod for title, menu, toolbar & stage
stage output
updated todo list
import zepto
template panel
basic pagenav
pagenav
design manager
basic data observer
new file structure
basic mvvm test with template list
basic data binding (template, layout, design, page)
title data binding and restructure the js files
data binding for stage diaplay
type map for preview
picture preview and text editor
restruct type map and vm
storage & reset
quite simple picture editor (no size control and no storage release)