added Excel format option in config
Fix version numbers (3.4 => 4)
Removed 'Dialogs' string, because it is confusing for most activity names (e.g. 'Delete file' becomes 'Delete file Dialogs')
Avoid perl warnings

perl 5.20 warns "Useless use of greediness modifier ? in regex" when
a question mark is used after a quantifier, but followed by the \z anchor
Merge branch 'master_Excel_config' of github.com:s7design/otrs
Fixed: Generated CSV file cannot display Chinese characters in MS Excel (bug#10656).
Merge branch 'perl-warning-greediness' of github.com:moritz/otrs
Merge branch 'change-frontend-agent-processactivitydialogsuffix-nilei-master' of github.com:nilei/otrs
Corrected handling of --help.
Improved Excel output.
Prepare for release.
Updated file list to add new CONTRIBUTING.md.
Updated translation files, thanks to all translators.
Add missing directories to build script, they were created by otrs.SetPermissions.pl previously.
Fixed wrong hash access on array ref.
Show unread star also in timeline view and mark articles as read when clicking the star or the magnifier icon.
Fixed JS errors and IE issues.
Improved short text display in timeline view.
Added white background color for article content to improve readability.
Fixed bug#10679 - Texts in notification tags loose their empty lines and spaces.