add ability to skip installation
Merge branch 'feature-install' into development
fix adding the prefix

Now it will only add the prefix to sql queries with "prefix_tablename" and not to the placeholder %r which causes conflicts with non statistics tables.
fix some placeholders
Merge branch 'feature-portal' into development
bump version
header icon can now be changed
make use of time format
new admin interface
add cache options
Merge branch 'feature-portal' into development
bump version
minor fixes

- rename installation process
- center steps
Merge branch 'feature-install' into development
minor design fixes
Merge branch 'feature-portal' into development
bump version
minor improvements
fix online players
Merge branch 'feature-portal' into development