Bug 19274: Translatability: Fix new splitting problems related to database warnings

Bug 19274: Translatability: Fix new splitting problems related to database warnings

The warnings about database problems introduce new translatability problems,
mostly related to sentence splitting by html tags.

To test:
- Verify that text changes make sense
- Apply patch, verify that messages properly.
  Note: To force display you might want to add '1 ||' to the related
  if statements, including line 134,  e.g. [% IF 1 || has_ai_issues %]
- Bonus test: Go through an translation cicle and verify that fragemts as
  mentioned in initial comment are gone.

(Amended to fix tiny typo)

Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>