improve accessility

src/components/DefElement.vue

@@ -9,7 +9,7 @@
        --><router-link class="article_ref" v-if="item.type == 'article_ref'" :to="item.ref" @click.native="article_link_click(item)" :key="index">
          <span class="link_text">{{item.link_text}}</span><!--
        -->
-       <span class="homograph" v-if="item.lemmas[0].hgno" :aria-label="item.lemmas[0].hgno" :key="index"><!--
+       <span class="homograph" v-if="item.lemmas[0].hgno" :aria-label="dictionary=='bm'? 'Betydning': 'Tyding' + ' nummer '+item.lemmas[0].hgno" :title="dictionary=='bm'? 'Betydning': 'Tyding' + ' nummer '+item.lemmas[0].hgno" :key="index"><!--
         --> ({{roman_hgno(item.lemmas[0])}}{{item.definition_order ? '': ')'}}</span>
         <span class="def_order" v-if="item.definition_order" :aria-label="'definisjon '+item.definition_order">{{item.lemmas[0].hgno ? ', ': ' ('}}{{item.definition_order}})</span>
        </router-link>

src/components/Header.vue

@@ -10,7 +10,8 @@
                  class="article_header">
     <span v-for="(lemma, index) in lemmas" 
           :key="index">{{lemma.lemma}}<!--
-          --><span :aria-label="hgno_arabic" 
+          --><span :aria-label="'Betydning nummer ' + hgno_arabic" 
+                   :title="'Betydning nummer '+hgno_arabic"
                    class="hgno">{{" "+roman_hgno(lemma)}}</span><span 
                    class="title_comma" 
                    v-if="lemmas[1] && index < lemmas.length-1">{{", "}}
@@ -52,6 +53,7 @@
     </span>                <span v-if="$parent.collapsable" >
           <v-btn class="expand_icon"
            :title="$parent.collapsed? 'Vis mer' : 'Kollaps'"
+           :aria-label="$parent.collapsed? 'Vis mer' : 'Kollaps'"
            text
            small
            @click="$parent.collapsed=!$parent.collapsed">