Update igv.js chrom alias files to include alias for chrom M

[northwestwitch]

This PR adds a functionality or fixes a bug.

• Fix #4866

Testing on cg-vm1 server (Clinical Genomics Stockholm)

**Prepare for testing** 1. Make sure the PR is pushed and available on [Docker Hub](https://hub.docker.com/repository/docker/clinicalgenomics/scout-server-stage) 1. Fist book your testing time using the Pax software available at [https://pax.scilifelab.se/](https://pax.scilifelab.se). The resource you are going to call dibs on is `scout-stage` and the server is `cg-vm1`. 1. `ssh @cg-vm1.scilifelab.se` 1. `sudo -iu hiseq.clinical` 1. `ssh localhost` 1. (optional) Find out which scout branch is currently deployed on cg-vm1: `podman ps` 1. Stop the service with current deployed branch: `systemctl --user stop scout.target` 1. Start the scout service with the branch to test: `systemctl --user start scout@` 1. Make sure the branch is deployed: `systemctl --user status scout.target` 1. After testing is done, repeat procedure at [https://pax.scilifelab.se/](https://pax.scilifelab.se), which will release the allocated resource (`scout-stage`) to be used for testing by other users.

Testing on hasta server (Clinical Genomics Stockholm)

**Prepare for testing** 1. `ssh @hasta.scilifelab.se` 1. Book your testing time using the Pax software. `us; paxa -u -s hasta -r scout-stage`. You can also use the WSGI Pax app available at [https://pax.scilifelab.se/](https://pax.scilifelab.se). 1. (optional) Find out which scout branch is currently deployed on cg-vm1: `conda activate S_scout; pip freeze | grep scout-browser` 1. Deploy the branch to test: `bash /home/proj/production/servers/resources/hasta.scilifelab.se/update-tool-stage.sh -e S_scout -t scout -b ` 1. Make sure the branch is deployed: `us; scout --version` 1. After testing is done, repeat the `paxa` procedure, which will release the allocated resource (`scout-stage`) to be used for testing by other users.

How to test:

1. how to test it, possibly with real cases/data

Expected outcome: The functionality should be working Take a screenshot and attach or copy/paste the output.

Review:

• [x] code approved by DN
• [x] tests executed by DN

[sonarcloud[bot]]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

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```diff @@ Coverage Diff @@ ## main #4871 +/- ## ======================================= Coverage ? 84.77% ======================================= Files ? 319 Lines ? 19296 Branches ? 0 ======================================= Hits ? 16358 Misses ? 2938 Partials ? 0 ```

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[dnil]

Now correctly loads data also for contig M alignment data:

The change on hg19 is a little complicated, since there are some different builds in rotation for e.g. 1kg. But we have opted to "solve" that by always starting on hg38 for MT anyway, so should be all good.

[northwestwitch]

Nice, thanks for testing!