JSON value for updates can be null in some cases. For example when user owns a dlc but not the base game.
This caused a crash due to std::stoi throwing std::invalid_argument exception
If we print shorter progress text than we printed earlier then characters from the earlier string would remain on the terminal because the line was not cleared.
Clear the line before printing to avoid the extra characters.
Ignore DLC count information for specific games by using a list of games that we know have DLC.
GOG reports wrong DLC count information for many games. By using a list of games that we know have DLC we can ignore DLC count info that GOG provides for those games.
User can use local list ($XDG_CONFIG_HOME/lgogdownloader/game_has_dlc.txt) or use remote list by using the new "--dlc-list" option.
The list uses same format as blacklist.
Adds options to set path to CA certificate bundle in PEM format.
CURL_CA_BUNDLE environment variable is used if it is set and CA certificate path is not set with --cacert option.
Fixes an issue caused by 33fb004cdd8ccbcb08b1f5ad9b62b1fe4801941d
Website handle didn't have updated config which caused overridden values to be ignored
