Please mark created files with decimal separator

[blaubaer]

Please add the following lines to the head of the generated Excel Files:

    <style>
    <!--table
    {mso-displayed-decimal-separator:"\.";
    mso-displayed-thousand-separator:"\,";}
        -->
    </style>

Because on systems with other separators like this, excel cannot parse time formarts in the right way without this hints.

[Andriy Zhdanov]

resolve Issue#448, Issue#430, Issue#468: merge with dev

→ <<cset 24c4828c46bd>>

[Andriy Zhdanov]

Version 2.7.6 with the improvement is available for install from Atlassian Marketplace.