fixed add/rem author funtionality for bs5 and converted to svg icons away from fontawesome

templates/books_for_series.html

@@ -16,7 +16,10 @@
 						success: function(data){
 							$('#books_for_series_bit').html(data); } 
 					} ); return false;">
-					<i class="fas fa-angle-double-up" style="font-size:10px"></i></button>
+					<svg width="12" height="12" fill="currentColor">
+                        <use xlink:href="{{url_for('static', filename='icons.svg')}}#caret-up-fill"/>
+                    </svg>
+				</button>
 				<button name="move_button" value="down-{{book.id}}" id="down-{{book.id}}" class="btn btn-outline-primary btn-small" {{style}}
 					onClick="$.ajax({ 
 						type: 'POST', url: '/books_for_series/{{series.id}}', 
@@ -24,7 +27,10 @@
 						success: function(data){
 							$('#books_for_series_bit').html(data); } 
 					} ); return false;">
-					<i class="fas fa-angle-double-down" style="font-size:10px"></i></button>
+					<svg width="12" height="12" fill="currentColor">
+                        <use xlink:href="{{url_for('static', filename='icons.svg')}}#caret-down-fill"/>
+                    </svg>
+				</button>
 				<a href="/book/{{book.id}}">{{book.title}}</a>
 			</td>
 			{% set num = SeriesBookNum( series.id, book.id ) %}