Add 'no result' output option (#50)

Closes: #49

Signed-off-by: Justin Georgi <justin.georgi@gmail.com>

Reviewed-on: Georgi_Lab/ALVINN_f7#50

src/pages/detect.vue

@@ -24,7 +24,7 @@
           @delete="deleteChip(result.resultIndex)"
           :style="chipGradient(result.confidence)"
         />
-        <span v-if="showResults.filter( r => { return r.aboveThreshold && r.isSearched && !r.isDeleted }).size == 0">No results.</span>
+        <span v-if="showResults.filter( r => { return r.aboveThreshold && r.isSearched && !r.isDeleted }).length == 0" style="height: var(--f7-chip-height); font-size: calc(var(--f7-chip-height) - 4px); font-weight: bolder; margin: 2px;">No results.</span>
       </div>
       <f7-segmented class="image-menu" raised>
         <f7-button popover-open="#region-popover">