add new variables for "pagination" to improve support of customizing
Update grunt-csscomb dependency

Per David DM.
Merge pull request #11959 from ZDroid/update-grunt-csscomb

Update grunt-csscomb dependency
Drop remaining leading commas
Merge pull request #11960 from ZDroid/no-leading-commas-json

Drop remaining leading commas
Merge pull request #11956 from tlindig/tl_pagination_customizing

add new variables for "pagination" to improve support of customizing