Bug 36885: Fix Bootstrap tooltip on budget planning page

Bug 36885: Fix Bootstrap tooltip on budget planning page

This patch finishes the process of adding a Bootstrap tooltip to the
listing of funds which are locked.

To test, apply the patch and go to Administration -> Budgets.

- Edit a budget and make it locked: Check the "Lock budget" checkbox and
  save.
- View the budget you locked.
- From the toolbar, click Planning -> Plan by months.
- In the table of funds, hover your mouse over a fund.
- You should see a Bootstrap-styled tooltip, "Fund locked."

Signed-off-by: David Nind <david@davidnind.com>
Bug 36885: (follow-up) Correct popup hint

Bug 36885: (follow-up) Remove tooltip from unlocked budgets (copy-paste error)

Signed-off-by: Marcel de Rooy <m.de.rooy@rijksmuseum.nl>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>