Make file names (human-)readable

[fanrongqitiancai]

Current behavior

when I create a new note,the file is .cson file format.but I hope to create it as .md format.
the file name is not readable like this:769240df-bee4-4d8f-9fc2-e708782ec107.cson.
I hope that the file name is like this: JavaScript code -2018-06-08 16:13:18.md

Expected behavior

Steps to reproduce

Environment

• Version :
• OS Version and name :

[Rokt33r]

It should be nice to have. But, we have to prepare another space to store some metadata.
I am actually considering to implement this on the renewed app, not the current app because the risk of migrating data is quite high.

[cselti]

It can be solved, if the metadata (that is stored in the cson file) will be stored inside the markdown file between HTML comment tags ( <!-- etc --> ), similar like the generated ToC used now. The result will be a "standard" github markdown file, that can be editable with different editor on different platforms - like smartphone, web based editor, etc.

I would like such a solution, where the notebooks will be a standard Github flavored markdown files, that can be editable by other tools too. The Boostnote specific information will be stored in HTML comments tags and/or in a separate json file.

UPDATE: the #490 have already proposed the same solution

[Flexo013]

Changing the file type is already being discussed in #490

[Flexo013]

Duplicate of #1447