gEAR Workshop - Single-cell workbench - Misc fixes

[adkinsrs]

• [x] Change mdi-forbid to mdi-lock to show irreversable steps
• [x] Update "current analysis: New" when the analysis label is renamed
• [x] Move Save/Rename/Delete buttons for analysis into the analysis "progress bar" container
• [x] Add a guide to the progress bar icons
• [x] Why does saving dataset for highly variable genes step take so long?
• [x] Leiden clustering output still shows "louvain" in the plot title
• [x] For "locked" steps, still allow for expansion of the box, but just disable the buttons or hide them entirely. That way you can still review the plots
• [x] In "rename clusters" step, have loading indicator when running
• [x] In "compare genes" step, clear out existing select dropdown options when new group labels are set (i.e. renaming)

[adkinsrs]

Why does saving dataset for highly variable genes step take so long?

    if save_dataset:
        # Regress out effects of total counts per cell and the percentage of mitochondrial genes expressed.
        if regress_out == 'true':
            sc.pp.regress_out(adata, ['n_counts', 'percent_mito'])

        if scale_unit_variance == 'true':
            sc.pp.scale(adata, max_value=10)

        adata.write(dest_datafile_path)

Both the scanpy "regress out" and "scaling" functions occur only when saving a dataset vs not saving. Since there have never been options to enable/disable these two things in the single-cell workbench, these were never run in the v1 version of gEAR. I will disable them for now to speed up the saving step, but I think @DanLesperance and @JPReceveur should also have a say. Info can be found in the last paragraphs of the Preprocessing step of https://scanpy.readthedocs.io/en/stable/tutorials/basics/clustering-2017.html