Merge relevant Abstract and references

• merge the 2 sections
• Make the way references are displayed more compact

components/content/RefseqDb.vue

@@ -151,7 +151,7 @@ function capitalize([first, ...rest]) {
 </script>
 
 <template>
-    <v-card flat class="mb-2">
+    <v-card flat class="mb-2" color="transparent">
         <v-toolbar density="compact">
             <v-toolbar-title>Distributions</v-toolbar-title>
             <v-btn-toggle v-model="distriTool" multiple density="compact" rounded="false" variant="text" color="primary"
@@ -162,7 +162,7 @@ function capitalize([first, ...rest]) {
         </v-toolbar>
         <v-row align="start" class="mb-2">
             <v-col :cols="fullWidth ? 12 : 6">
-                <v-card flat class="my-3">
+                <v-card color="transparent" flat class="my-3">
                     <v-card-title>Systems </v-card-title>
 
                     <v-card-text>
@@ -171,7 +171,7 @@ function capitalize([first, ...rest]) {
                 </v-card>
             </v-col>
             <v-col :cols="fullWidth ? 12 : 6">
-                <v-card flat>
+                <v-card flat color="transparent">
                     <v-card-title>Taxonomic</v-card-title>
                     <v-card-text>
                         <v-select v-model="selectedTaxoRank" :items="availableTaxo" density="compact"