* LibreOffice changed into %PRODUCTNAME
* std::pair made into std::tuple and hyperlinks separated from strings
* tip about donation / getinvolved added
* "Use an array formula to repeat a calculation with different values..." removed
* "%PRODUCTNAME supports 110 languages"->"%PRODUCTNAME supports over 150 languages"
* code added to open offline help
* online hyperlinks converted into offline links, if available
* Ctrl, Shift, Alt uppercased
* › replace by >
* ellipsis removed

Change-Id: Ic35257d0a6d6e77750716254fb9d1f6983a54af1
Reviewed-on: https://gerrit.libreoffice.org/71760
Tested-by: Jenkins
Reviewed-by: Heiko Tietze <tietze.heiko@gmail.com>