LogsDownloaderWorker/FtpDownloader: Set a 15s data timeout.
General/NeptusProperty: Fix a problem that was not properly fix with editable property setting.
Some time ago this parameter was called hidden. In the name change something got in the way of proper change because editable was actually the negative of what the name implies.
Some values of some properties was left alone because the developer was let to error.
Updated changelog.
Merge branch 'feature/ftp-fix' into develop