Handle long values in the Project Label section on the project detail page

[MillenniumFalconMechanic]

Long values in the "Project Label" section are currently pushing out the right-hand side of the label/value pair on the project detail page.

See https://data.humancellatlas.org/explore/projects/88ec040b-8705-4f77-8f41-f81e57632f7d:

We should either truncate the value and add an ellipsis and tooltip, or add a work-break/break-all rule to the value.