Update dashboard for better fit of small boxes

[KrunchMuffin]

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What does this PR aim to accomplish?:
Better readability of the dashboard on small and medium devices

{A detailed description, screenshots (if necessary), as well as links to any relevant GitHub issues}
On the raspberrypi official touchscreen (and other screens that fit "small" and "medium"), the small boxes take up the 12 columns which forces to scroll and is generally ineffective as a quick glance dashboard.

How does this PR accomplish the above?:
I have updated to col-sm-6 so there are 2 boxes on 2 rows so now you can see all those stats plus the queries last 24 without having to scroll. the col-xs-12 is not necessary as it will default to that.
{A detailed description (such as a changelog) and screenshots (if necessary) of the implemented fix}

What documentation changes (if any) are needed to support this PR?:
NONE

{A detailed list of any necessary changes}
updated to col-sm-6 from col-xs-12

[AzureMarker]

Can you add screenshots of before and after on the affected screen sizes?

[KrunchMuffin]

Sure. Don't know how to do screenshots on RPi, so took pic if that's OK?

[AzureMarker]

@KrunchMuffin follow the instructions in the DCO check to sign-off your commit.

[KrunchMuffin]

Sign off done