add UI support for repo field in search results

[Mansi2007275]

Summary

Closes #265

Adds optional UI support for the repo field now present
in PDS data sources.

Changes Made

bin/database_build.py

• Added repo column to MySQL table schema in createTable()
• Updated jsontosql() to handle all INSERT cases

src/classes/package_search.py

• Added repo to both SELECT queries in searchSQLPackages()

src/static/js/views/home.html

• Added optional "Show Repository" checkbox
• Added Repository column — shows clickable link when repo
  exists, shows — when absent

[pleia2]

A couple days before your change, #302 was merged which handles the bin/database_build.py part of this, so you can remove this file from your change.

But the bigger issue is that we removed Flask entirely from this repository recently, so your work was on the old UI, oops! ☹️

We want this change on the new React-based front-end, which currently looks like this:

I'm thinking we want something like the version number tag (in the above screenshot, it's "0.2.0-1"), perhaps in another color? For sources that come from the IBM Validated software list.