Bug 7598: make strings in acquisitions JavaScript translatable

Bug 7598: make strings in acquisitions JavaScript translatable

English strings in acq.js cannot be processed by the translation script.
This patch moves the strings to the templates to be set as JS variables
for use by the script.

To test:

- On the uncertain prices page, enter an invalid price and click save.
  You should see a JavaScript alert pointing this out.

- When adding a fund to an existing budget, enter an amount which
  exceeds the amount in the parent budget. You should see a JavaScript
  alert pointing this out. There is a similar function which has been
  corrected, checkBudgetParent(), but I don't know how to trigger it for
  testing.

The closebasketgroup function has been updated but as far as I can tell
it's not actually in use.

Signed-off-by: Srdjan <srdjan@catalyst.net.nz>
Signed-off-by: Jonathan Druart <jonathan.druart@biblibre.com>
Signed-off-by: Galen Charlton <gmc@esilibrary.com>