scripts/mkdb: Fix invalid variable escape
pip-db/search: Increase max search results to 150
pip-db/ui: Remove "login" link from navbar

With respect to peer review comment:

     There seemed to be an option for the user to log in, but the
     benefit of doing so is not at all clear.

With the current implementation, there is no benefit to the login
functionality, so let's just hide it.
pip-db/search: Add starting no param to search

This is to enable pagination of results.
js/search: Update the pagination text
js/search: Use returned results not matched results
js/search: Create pagination links
pip-db/search: Only support positive start vals
Revert "pip-db/search: Increase max search results to 150"

This reverts commit f7df2a6048e7703f731383cd2f36fb7b0f74c624.