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
[TASK] remove v: from layout
Merge pull request #171 from misterboe/SidebarFix

[TASK] remove v: from layout WithSideBar.html
[TASK] Use tab title in backend
[TASK] Remove unused tabs below the content
[TASK] Use alternative text in ImageGallery Preview
[TASK] Remove duplicated class names
[TASK] code style
Merge pull request #1 from misterboe/codestyle

[TASK] code style
Merge pull request #174 from coding46/development

[TASK] Fix tiny issues in ImageGallery and Tabs
fix 'Boostrap' typos
Merge pull request #175 from cvrebert/development

fix 'Boostrap' typos
[TASK] Remove FCE.html layout file

It's identical to the Content.html layout file.
[TASK] Switch to translation-file-based label handling in page templates
[TASK] Update composer.json

Add dependencies
* fluidtypo3/fluidcontent
* fluidtypo3/fluidpages
Merge pull request #180 from coding46/TranslationFilesForPages

[TASK] Switch to translation-file-based label handling in page templates
Merge pull request #179 from coding46/RemoveFCELayout

[TASK] Remove FCE.html layout file