feat: Add gene migration incomplete banners to collections

[ghost]

Design: https://www.figma.com/file/TpoXVKFjd6MAl4ImidZ3wn/UI-Polish?node-id=302%3A383

Add the gene migration incomplete banner to the following collections to inform data consumers when a collection is still in the process of gene migration:

• A molecular cell atlas of the human lung from single cell RNA sequencing (https://cellxgene.cziscience.com/collections/5d445965-6f1a-4b68-ba3a-b8f765155d3a)
• Adult mouse cortical cell taxonomy revealed by single cell transcriptomics (https://cellxgene.cziscience.com/collections/a3c37598-b8e8-47db-92a9-eb91a77c9529)
• Single-Cell RNAseq analysis of diffuse neoplastic infiltrating cells at the migrating front of human glioblastoma (https://cellxgene.cziscience.com/collections/558385a4-b7b7-4eca-af0c-9e54d010e8dc)
• An integrated transcriptomic and epigenomic atlas of mouse primary motor cortex cell types (https://cellxgene.cziscience.com/collections/ae1420fe-6630-46ed-8b3d-cc6056a66467)
• Shared and distinct transcriptomic cell types across neocortical areas (https://cellxgene.cziscience.com/collections/45f0f67d-4b69-4a3c-a4e8-a63b962e843f)
• Single-cell gene expression profiling of SARS-CoV-2 infected human cell lines (https://cellxgene.cziscience.com/collections/d0e9c47b-4ce7-4f84-b182-eddcfa0b2658)
• Muraro Pancreas (https://cellxgene.cziscience.com/collections/6e8c5415-302c-492a-a5f9-f29c57ff18fb)
• Construction of a human cell landscape at single-cell level (https://cellxgene.cziscience.com/collections/38833785-fac5-48fd-944a-0f62a4c23ed1)
• A Web Portal and Workbench for Biological Dissection of Single Cell COVID-19 Host Responses (https://cellxgene.cziscience.com/collections/b9fc3d70-5a72-4479-a046-c2cc1ab19efc)
• An Atlas of Gene Regulatory Elements in Adult Mouse Cerebrum (https://cellxgene.cziscience.com/collections/5e469121-c203-4775-962d-dcf2e5d6a472)
• Azimuth meta-analysis of human scRNA-seq datasets (https://cellxgene.cziscience.com/collections/2f75d249-1bec-459b-bf2b-b86221097ced)
• Human cortical expansion involves diversification and specialization of supragranular intratelencephalic-projecting neurons (https://cellxgene.cziscience.com/collections/4f586cb6-972b-4ef7-a4ef-3c3800a3c004)

[ghost]

So sorry @brianraymor. I created this ticket under the parent epic, but I'm not sure how to link the issue to the PR without messing anything up, since it's single-cell vs. single-cell-data-portal. PR is here: https://github.com/chanzuckerberg/single-cell-data-portal/pull/1486

[brianraymor]

If you want, we could move or transfer this issue from single-cell to single-cell-data-portal, but I think that would mainly be cosmetic at this point.

[ghost]

I'll manually close this issue after its QAing!