rebase 1.4.5

Unfortunately Git rebase seems to take longer and longer each time a
rebase is done. At this point I am not sure I would live long enough to
rebase the 1.4.5 release again, so I have re-cast it.
Merge pull request #219 from zenphoto/updates

check validity of the database software setting and run setup it it is f...
Dutch translation
Merge remote-tracking branch 'origin/2013_02_03' into 1.4.5

Conflicts:
	zp-core/zp-extensions/slideshow.php

	modified:   zp-core/zp-extensions/slideshow.php
Add slideshow for "favorites" page
Merge branch 'local-fixes' into 1.4.5
Dutch translation
Merge branch '1.4.5' of https://github.com/zenphoto/zenphoto into Dutch_translation
Dutch translation
Merge pull request #225 from zenphoto/Dutch_translation

Dutch translation via new local branch
release id 9b04ddf31a
Dutch translation
Merge pull request #228 from zenphoto/Dutch-translation-Dev

Dutch translation
Absolutely prevent loading of multiple DB software handlers
Issue #220: leave static image URL cleartext

This is in a function definition in javascript. I can only assume that
these strings are not html decoded by the browser. Anyway, i.php gets
passed the correct strings if cleartext and gets passed the encoded html
entities if the string is encoded.

This will fix the error shown in the debug log. But even with that error
for me all that fails is the display of the image, the video still
plays.
Corrections to make the new Zenphoto server installation go more smoothly
Provide an error message if BACKUP cannot open for writing the bakup file
Merge branch 'un-synced-fixes' into 1.4.5

Conflicts:
	zp-core/locale/nl_NL/LC_MESSAGES/zenphoto.mo
	zp-core/locale/nl_NL/LC_MESSAGES/zenphoto.po
	zp-core/setup/index.php
	modified:   zp-core/setup/index.php
fix merge conflict