Fixes suffix of files when saved

[Kani999]

Fixes - #48 Closes - #49

Extensions get doubled suffixes when saved without any name. Also, part of the path gets stored within a name. This should be fixed now.

Note:

• filepath does not change when the name is edited
• filepath is partially generated when you upload the same file (name)
• filepath is displayed in downloaded URL even if you rename the file to custom name.
• File path is generated once when creating the object and it's based on name (if provided) or based on original filename.
  • As said, the File Path is not changed after the creation