Installation wizard doesn't show error message

[Nicklas Nordborg]

If there is an error (that can't be fixed) in the installation wizard and error message should be displayed. The problem is that the HTML/CSS is placing the error message below the table with detailed information so that it is not visible.

There is also a problem that fixable errors use the same icon as un-fixable errors so if there is a mix it is very hard know which errors need to be manually fixed and which ones that can be automatically fixed later.

[Nicklas Nordborg]

(In [5041]) References #1071: Installation wizard doesn't show error message

The error message should now be located at the bottom of the screen.

[Nicklas Nordborg]

(In [5042]) References #1071: Installation wizard doesn't show error message

Changed the icon for "missing" item to a warning icon. This makes more sense since that is something that can be automatically fixed.

[Nicklas Nordborg]

(In [5043]) References #1071: Installation wizard doesn't show error message

The "Fix items" button is now displayed when there are items that can be fixed even if there is an error or not.

[Nicklas Nordborg]

(In [5122]) References #1071: Installation wizard doesn't show error message

Fixed a problem where the installation wizard displayed "All checks passed" at the same time as a button "Create missing items".