added email notification for cron jobs in system preferences
fixed typos
upgrade cron jobs upgrade script
scheduler command fixes
added log:maintenance cron job
added sorting to status and notify columns in cron jobs table
added details url for cron jobs
Merge pull request #778 from takeit/master

WOBS-3382 & CS-5459 & CS-5434
Merge branch 'jobs' of https://github.com/takeit/Newscoop into takeit-jobs

Conflicts:
	newscoop/install/Resources/sql/campsite_core.sql
	newscoop/install/Resources/sql/upgrade/4.3.x/2014.07.29/tables.sql
	newscoop/install/Resources/sql/upgrade/4.3.x/2014.07.30/cronjobs.php
	newscoop/library/Newscoop/Entity/CronJob.php
	newscoop/library/Newscoop/Tools/Console/Command/SchedulerManagerCommand.php
	newscoop/src/Newscoop/NewscoopBundle/Controller/SystemPrefController.php
	newscoop/src/Newscoop/NewscoopBundle/Resources/translations/system_pref.en.yml
	newscoop/src/Newscoop/NewscoopBundle/Resources/views/SystemPref/index.html.twig
Merge branch 'takeit-jobs'
updated translation resources
updated translation resources
updated translation resources
improved crontab.php script
CS-5479 - Typo in background jobs string
CS-5439 - Typo in Newscoop smarty string
CS-5472 - Resources directory contains obsolete translation strings