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Revert "remove obsolete option 'Use address from System Settings', no default email setting in systemsettings anymore"
CCMAIL:djarvie@kde.org
This reverts commit 539c89a4.

remove obsolete option 'Use address from System Settings', no default email setting in systemsettings anymore

remove entities kappname + package, not used in kf5
bump date + releaseinfo
remove obsolete options
add missing option --triggerEvent
replace Help options with qt5options + kf5options
remove KResources related stuff
remove &reporting.bugs; + &updating.documentation;, not used in kf5
fix path for kalarm files
remove appendix installation, outdated
update screenshots
REVIEW:129621