Add stub methods to show unannotated paralogs info panel

[twalsh-ebi]

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Description

This PR would add stub methods EnsEMBL::Web::Object::Gene::has_unannotated_paralogs and ComparaParalogs::_show_unannotated_paralogs_info_panel, which would be used in eg-web-plants PR 102 to support display of info boxes in the gene family and paralogue views of some genes in Ensembl Plants. ( See also eg-web-common PR 163 )

Views affected

This PR is mainly expected to affect the Plants Compara paralogue view, where it enables an info box in the paralogue view of genes having unannotated paralogies.

The has_unannotated_paralogs method adds of the order of 10ms to the load time of the paralogue view of a gene with unnannotated paralogues, and of the order of 1ms for genes that are not in a tree having unannotated paralogues.

Because stub methods are used, this change is expected to have a negligible effect on the ComparaParalogs component in other websites.

Possible complications

No complications are expected.

Merge conflicts

None detected.

Related JIRA Issues (EBI developers only)

• ENSINT-1899