release 1.4.4.6

fixes #278
release id 4fd3c047c8
make it 1.4.4.8

Got to fix the taging process to insure that the release version is set
correctly.
Typo causing fatal error in html_meta_tags
Some slideshow changes: The slideshow now has a default css and controls that can be either overriden by the theme CSS file (depending where the theme_head filter is!) or as always by a theme based slideshow.css and controls. The theme slideshow.php does NOT load the css anymore and also uses the normal theme css as a base so the background of the page is that of the theme. Note: Stopdesign makes a few problems yet unsolved.
Package update
Dutch translation
Merge pull request #423 from zenphoto/Dutch-translation-Dev

Dutch translation
Form cleanup regarding the required stars
Fixes contact_form not checking for required fields at all (all were required always);
Make all required stars enclosed in strong tags without space (Set via the theme using "form label strong { … } if really needed - in German for example it is not)
German update
Dutch translation
Fixes typo in contact_form
French translation

update french translation for :
comment_form, contact_form, register_user, reCaptcha, zpCaptcha, rss
Merge pull request #426 from vincent3569/1.4.5

French translation
Merge remote-tracking branch 'origin/master' into 1.4.5

Conflicts:
	zp-core/version.php

	modified:   zp-core/githead
Merge remote-tracking branch 'origin/1.4.5' into 1.4.6