Added form on Full View page.
Merge branch 'upload-files' of https://github.com/KopBob/Textum into upload-files
Merge branch 'convertor' of https://github.com/KopBob/Textum into convertor
Created file popup.js for refactoring
Refactoring is done.
Issue #7: Refactoring finished. Added file popup.js, which is responsible for showing pop-up window.