added json converter for encoding and bookmarks#474

Hirogen merged 2 commits intoDevelopmentLogExperts/LogExpert:Developmentfrom

470-settings-deserialization-fails-if-filterparamscurrentcolumnizer-cant-be-deserializedLogExperts/LogExpert:470-settings-deserialization-fails-if-filterparamscurrentcolumnizer-cant-be-deserializedCopy head branch name to clipboard