* backport some changes from debian
  - new version fixing a crash (LP: #602907)
* debian/patches/01_ubuntu_signature.patch:
  - add ubuntu signature to new account
* debian/patches/02_fix_missing_include_for_composer.patch:
  - add a missing include for composer to build
* debian/patches/89_express.patch:
  - remerged evolution express with great care
  - fix impossibility to set "keep mail on server" for POP account
    (LP: #615023)
* debian/patches/90_disable_deprecation_warning.patch: refreshed
* debian/patches/91_git_fix_format_itip.patch: removed, included upstream
* backport debian/patches/91_git_additional_chinese_translations.patch,
  debian/patches/91_git_fix_untranslatable_list_editor.patch from trunk