Ads missing export card config view titles
Adds changelog entry
Merge pull request #5 from finnlabs/fix/view_titles_4024

[FIX] View titles 4024
Added further validation to per_page field of configs to ensure positive numericality. Took the opportunity to write some better specs to test validation.
Added locales for export config yaml error messages.
updates changelog #4157
Merge pull request #10 from finnlabs/bug-4157-per-page-negative-integers-validation

Added further validation to per_page field of configs to ensure positive...
Further checks for badly formed YAML.
Moved yaml error message into locales.
Rows text area has wiki-edit class.

This makes it full width although i don't know if we want to give it it's own class.
Changed german locale.
Property "height" can now be set for a group.
Added description field to export card config model.
removes required mark from non required field
updates changelog
Merge pull request #11 from finnlabs/bug-4182-export-config-description

Added description field to export card config model.
Merge pull request #13 from finnlabs/bug-4180-rows-text-area-full-width

Rows text area has wiki-edit class.
Added a help icon to the config rows textarea.

This is a complete mess, I was just trying to get it done quickly for the demo and don't know any other way of doing it right now. Should really consider refactoring this.
Moved hacky code into a partial.
removed comment.