In some edge case the image handler is not available, now doesn't throw an exception
Merge pull request #360 from terwey/image_class_fix

In some edge case the image handler is not available, now doesn't throw ...
updated language resources
Fix typo in 'attachment'
updated language resources
get article authiors not article creator
Merge pull request #363 from ahilles107/v4.2.1

get article authiors not article creator
Merge pull request #361 from danielhjames/v4.2

[4.2] Fix typo in 'attachment'
CS-4764: add aim, skype and jabber
Merge pull request #367 from sourcefabric/v4.2.1

V4.2.1
MOTM-747: fix invalid date as parameter

Conflicts:
	newscoop/include/smarty/campsite_plugins/function.build_solr_fq.php
MOTM-747: ignore invalid date as parameter
Merge branch 'v4.2' of https://github.com/sourcefabric/Newscoop into v4.2.1
add missing translations
Merge pull request #370 from ahilles107/v4.2.1

Add few missing translations, add few Turkish translations.
add missing translations
Merge pull request #371 from ahilles107/v4.2.1

add missing translations
add posibility to filter section authors by type
Merge pull request #372 from ahilles107/v4.2.1

add posibility to filter section authors by type
use correct version of smarty bundle in v4.2