LIMS-1025: Fix lab contact search

[ndg63276]

JIRA ticket: LIMS-1025

Summary:

Fix lab contact search

Changes:

• Create a where clause to match the passed in search term to any of the lab contact fields
• Start with a known false condition as each field adds an "or" clause

To test:

• Go to a list of lab contacts on a proposal and search for each field in turn
• View a single lab contact, test it displays correctly

[John-Holt-Tessella]

This pattern is repeated everywhere, lets not do it again. Instead we should pass s and a list of field names to a whereSearch method of WhereClauseQueryBuilder which is probably part of, or at least used by, DatabaseQueryBuilder. The query builder can be used directly here or even extended to do the whole paginate search.
Would love to see the pageing code but in there too.
This function should be something like:

query.where(proposalId, $this->proposalid)
if cid:
  query.where(proposalId, $this->proposalid)
query.search($fields, this->arg('s')

$where = query.where_clause()

[John-Holt-Tessella]

But then it is my change :-)

[ndg63276]

Looks good to me.