Zeronet: Signing fail if Thumbs.db exist

[jerry-wolf]

If a user accesses their user content folder by Windows Explorer, Thumbs.db will be created. Then if site owner didn't add Thumbs.db to "ignore" node in content.json and only allow specified files, signing won't success.
The similar problems are in desktop.ini and .DS_Store.

[jerry-wolf]

Probably solution:

• Ignore these files by default, whether site owner added these to "ignore" node. But we would loose the ability to add these files to sites.
• Add a notice to Documentation.

[MuxZeroNet]

Like .gitignore, simply include by default a RegEx in content.json to exclude these temporary files.

http://127.0.0.1:43110/Talk.ZeroNetwork.bit/content.json

"ignore": "((js|css)/(?!all.(js|css))|data/users/.*db|data/users/.*/.*|data/archived|.*.py)",

Here NoFish excluded all .py files from his site.

"ignore": "(([Dd]esktop\\.ini)|([Tt]humbs\\.db)|(\\.DS_Store))",

[MuxZeroNet]

I also wonder what is the underlying reason for the failure. @l5h5t7 Could you please test this again in Rev 2009?

[ysc3839]

@MuxZeroNet Maybe it's because explorer is using this file so fopen fails.