gEAR Workshop - Single-cell workbench - Misc fixes

[adkinsrs]

• Change mdi-forbid to mdi-lock to show irreversable steps
• Update "current analysis: New" when the analysis label is renamed
• Move Save/Rename/Delete buttons for analysis into the analysis "progress bar" container
• Add a guide to the progress bar icons
• Why does saving dataset for highly variable genes step take so long?
• Leiden clustering output still shows "louvain" in the plot title
• 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
• In "rename clusters" step, have loading indicator when running
• In "compare genes" step, clear out existing select dropdown options when new group labels are set (i.e. renaming)