Add flexBog grid support to "page-list' block

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"Custom templates" are great but in "page-list" its little difference because a lot of times you want the same Style & CSS but in other layout (1/5 layout, 1/2, 1/1 and so on).

I have an idea to add "flex-box" grid (control layout, gutter, and so on in s/m/lL/XL) to the core "page-list" (Take only grid.less of boostrap, uiKit or any framework [10-15kb] + adding to the form - tab "Grid").

I create my own block like with "uiKit" Grid, and its really really easy to edit "page-list" like this (and i dont need "extra" custom templates for layout issues. only for styles).

100% it would be useful for a lot of users , "THE PROBLEM" the blocks in concrete5 are very clean (without extra CSS). Issues of foundation VS boostrap VS your own grid could be solve very easy (Edit vars.less breakpoints and that it - Or not use this feature)

Someone love this idea?

siton