Fieldmanager integration
Merge branch 'master' into fieldmanager-2

Conflicts:
	dev.php
	shortcode-ui.php
load fieldmanager fields only if plugin is available
declare methods as pub/private
remove duplicate code
review fixes
localize strings
remove debug
Don't load dev shortcode

cc @mattheu
Merge pull request #71 from fusioneng/fieldmanager-2

Support for three Fieldmanager fields: Textfield, Textarea, and Media