unify questionnaire editing vue components, re #3914, fixes #3915

...ews/questionnaire/question_types/likert/likert_answer.php

...questionnaire/question_types/likert/likert_evaluation.php

...tionnaire/question_types/rangescale/rangescale_answer.php

...naire/question_types/rangescale/rangescale_evaluation.php

resources/assets/stylesheets/scss/questionnaire.scss

resources/vue/components/questionnaires/FreetextEdit.vue

resources/vue/components/questionnaires/InputArray.vue

resources/vue/components/questionnaires/LikertEdit.vue

...s/vue/components/questionnaires/QuestionnaireInfoEdit.vue

resources/vue/components/questionnaires/RangescaleEdit.vue

resources/vue/components/questionnaires/VoteEdit.vue

resources/vue/mixins/QuestionnaireComponent.js