core: update German translations
doc: update German documentation
core: add issue #143 in ChangeLog
doc: update German auto-generated files
irc: reformat some code to make it more readable
trigger: fix trigger example "effects" in /help trigger (update regex to new format)
doc: update German documentation
doc: update German auto-generated files
core: send mouse code only one time to terminal with command /mouse enable|disable|toggle
core: add signals "mouse_enabled" and "mouse_disabled" (closes #244)
core: send mouse code only one time after delay with command /mouse enable|disable|toggle <delay>
relay: don't remove relay from config when the binding fails (closes #225), add options "stop" and "restart" in command /relay
irc: add support for CAP account-notify