Change start parameter

{sectionObject.column.class} is e.g. 'col-md-6'. For getting only col digit (here: 6) v:format.substring must start after the seventh character.
FourColumn grid col description

Col 2 is "Middle Left" and Col 3 is "Middle Right".
Merge pull request #169 from Kaimane/patch-2

FourColumn grid col description
Merge pull request #168 from Kaimane/patch-1

[BIGFIX] Change start parameter
Merge pull request #1 from bootstraptheme-for-typo3/development

Merged from main development repository