Update Epicov Front-end

[GopiGugan]

• 509

• Mongodb for front-end
• Add XBB Tree

[GopiGugan]

Checking the following:

• [x] Search
  • [x] Search by accession number
  • [x] Search by lineage
  • [x] Search by country
  • [x] Search by country (with date filter)
• [ ] Tree filtering
• [x] Download Time-scaled tree (nwk)
• [ ] Download Time-scaled tree (csv)
• [x] Download Beadplot (svg)
• [x] Download Beadplot (nwk)
• [ ] Download mutation list (csv)
• [ ] Beadplot cutoff slider
• [ ] Expanding Beadplot
• [ ] Translated pages
• [x] Changing the colour of the tree based on divergence, collection date, etc.
• [x] Left/Right arrow key to move between beads
• [x] Tooltips
• [x] Countries/Samples tabs are populating the correct information
• [x] Build front-end database without issues
• [x] Changing between "Non-Recombinants", "XBB Lineages" and "Other Recombinants" does not throw an error

[GopiGugan]

• [x] Update batch.py in the dev branch to send xbbtree.nwk to the epicov data folder on the web server
• [x] Check to see if there are any console.log statements that can be deleted
• [x] "Other Recombinants" should not be coloured by divergence