Implemented preference dialogs.
Updated icon.
Fixed session termination.
Created connection manager, but not tested.
Small improvements.
Changed style of the preference dialog.
Changed http header API.
Added header filter.
Fixed lack of header inclusion.
Created google-url.
Changed to use google-url.
Fixed exception when adding new server.
Fixed project version.
Changed dialog and control styles.
Created filter config dialog.
Small improvements.
Implemented "Edit" and "Edit*" filters.
Implemented "Merge" filter.
Fixed filter configuration.
Fixed loading button image.