Removed hard-coded background color and HTML table from installation confirmation

- Just before installer starts formatting disks and installing packages,
  user is asked to confirm the installation - a hard-coded color and
  RichText formatting has been removed from there
- bnc#865371
Added new changes file entry and new version
Merge pull request #157 from kobliha/fix_hardcoded_color

Removed hard-coded background color and HTML table from installation confirmation