[web] Skip client side parsing of reports when storing

[vodorok]

With the current report directory structure, it should not be needed to reparse all .plist files in the report folder. It should be enough to just zip the necessary .plist files and send those to the server.

Reparsing is needed because the server needs the hash content for all referred source files. If there would be an index like it is mentioned in #4266 then the report parsing would not be needed.