display gene source using gene metadata.name field from thoas (#542)

* ENSWBSITES-958 and ENSWBSITES-957
* display gene source using gene metadata.name
* fix test by adding gene metadata
* check for gene metadata name should be for xref only
* Add margin top to source
* Remove unused regex for gene name formatting
* update test for genename formatting
7 jobs for dev in 4 minutes and 51 seconds (queued for 8 seconds)
Status Job ID Name Coverage
  Test Build Static
passed #525856
Test_N_Build

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  Build Docker Images
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Nginx:Staging

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passed #525858
Node:Staging

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  Deploy
passed #525862
Pub:Staging-HL

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passed #525860
Pub:Staging-HX

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passed #525861
Staging:HL

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passed #525859
Staging:HX

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