Merge branch 'rollout-plugins' into 'master'

config/lang/de.json

config/lang/en.json

public_html/deployment/classes/formgen.class.php

public_html/deployment/classes/htmlguielements.class.php

public_html/deployment/classes/project.class.php

public_html/deployment/classes/rollout.interface.php

public_html/deployment/classes/rollout_base.class.php

public_html/deployment/pages/act_setup.php

public_html/deployment/plugins/rollout/default/info.json

public_html/deployment/plugins/rollout/default/lang_de.json

public_html/deployment/plugins/rollout/default/lang_en.json

...ml/deployment/plugins/rollout/default/rollout_default.php

public_html/deployment/plugins/rollout/ssh/info.json

public_html/deployment/plugins/rollout/ssh/lang_de.json

public_html/deployment/plugins/rollout/ssh/lang_en.json

public_html/deployment/plugins/rollout/ssh/rollout_ssh.php