Nicer fix for trailing <br>

Also handles headings and list items with trailing <br>s
Show timestamps in local timezone in viewer metadata page
DOCX Input: Fix various issues with numbering->lists

DOCX Input: Handle numbered paragraphs where the numbering is specified
in the paragraph style, instead of on the paragraph directly. Also
support the use of arbitrary, styled text for bullets.
Increase default max cover size tweak
Update Daily Express
Preserve current book when doing searches

When doing searches or switching between virtual libraries in the main
book list, preserve the current book. The currently selected book will
remain visible if it is present in the results of the search or the
selected virtual library. Fixes #1216713 [After selecting books which belongs to same serie, when returning to main window, we are at the top of the list and not at previously selected item](https://bugs.launchpad.net/calibre/+bug/1216713)
Update Dilema Veche
Update Jakarta Post and Jakarta Globe
Trigger backup for all books when adding/modifying a custom column

Merge branch 'master' of https://github.com/cbhaley/calibre
Update last_mod times when custom column metadata changes instead of triggering a backup.