jsSocial gets encrypted upload and upload by URL

The upload app now has encryption and url uploads: https://jsSocial.pw/app/upload [You can see a download here](https://jssocial.pw/app/encdownload/ppkey/x0x7/upload/gwKy0Rw0Zp.enc_file#test) Also the front page has actual app suggestions so you don't have to remember urls to apps to use them. Duh. For Developers: The backend now supports /{keytype}/fseturl/{key} meaning you can store a file at any location just by passing a url. [More details on the url upload in the tutorial](https://jssocial.pw/s/tutorial.html#fseturl) As for encryption it is: pass => pbkdf2-sha512 x1000 => AES-GCM It uses the newish WebCrypto API that's been rolling out.