Added invoice search + reformatted invoices page BOD-123

hasura/migrations/1595973678869_run_sql_migration/down.yaml

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+[]

hasura/migrations/1595973678869_run_sql_migration/up.yaml

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+- args:
+    cascade: true
+    read_only: false
+    sql: "CREATE OR REPLACE FUNCTION public.search_invoices(search text)\n RETURNS
+      SETOF invoices\n LANGUAGE plpgsql\n STABLE\nAS $function$\n\nBEGIN\n  if search
+      = '' then\n    return query select * from invoices ;\n  else \n    return query
+      SELECT\n  *\nFROM\n  invoices\nWHERE\n  search <% (invoice_number);\n  end if;\n\n\tEND\n$function$;"
+  type: run_sql