[ios] some ui view tips

imageview fit
http://stackoverflow.com/questions/185652/how-to-scale-a-uiimageview-proportionally

uitextview event
http://stackoverflow.com/questions/1426731/how-disable-copy-cut-select-select-all-in-uitextview

i18n
http://www.justaple.com/stapleViewer.html?id=078a7126b7e611e194cf40404112cf76

text wrap with core text in uiview
http://blog.amyworrall.com/post/11098565269/text-wrap-with-core-text