replaced main.js by admin.js for the admin panel. function 'post_later()' displays an input text to type the publishing date if the user choose to publish his post later
added a script block to the layout template
the user chooses if he want to publish now or later. in the last case, an input is displayed to let him type the publishing date
a template for testing the upload view. will be deleted
added a task : create a Post class instead of hard coding the stuffs in the upload view
added a slugify function to the helpers - get a slug from the post title
added an upload view - just getting the post datas for the moment
finished the posting interface (for the moment)