Improved html templates for mobile devices (responsive).

Fixed #995 (Use responsive navbar for main menu in backend template)
Added README.txt for plugin dir in portable version.
Merge pull request #1302 from emanuelschuetze/portable-plugin-reamde

Added README.txt for plugin dir in portable version.
Merge pull request #1298 from emanuelschuetze/fix-995

Improved html templates for mobile devices (responsive).
Changed motion title appearance. Fixed #1148.