Add AWS S3 javascript based upload.
Fix plaguing field label
Add description how to configure AWS S3
Fix png pictures and paper case extensions.
Fixed. Do not convert to markdown is HTML editor is turned on
Added support for all field not only pictures. If picture insert image or link.
Fixed multiple editors on one the page.
Merge pull request #7 from Serhioromano/staging

Add AWS S3 javascript based upload.