make $.imageInput() return image input object
FileInput: new widget with a bit of FileAPI
remove js error (logged in console) related to jquery getelementbyid when clicking anywhere on page
use jquery.fileapi 0.3.2; added in assets
inject csrf module in jinja env
JS: set csrf fieldname / token in Abilian namespace
split tag for abilian_init.js and defferedJS/inline code

abilian_init load additional libraries, deferred JS / page code must be executed after all libraries have been loaded
widget file: style