Fix voce attiva nei tabs

Luogo.html

@@ -112,13 +112,13 @@
 								<div class="col-12 mb-3">
 									<ul class="nav nav-tabs">
 										<li class="nav-item">
-											<button type="button" id="btn_info" class="nav-link" onClick="open_info();">Info</button>
+											<button type="button" id="btn_info" class="nav-link" data-toggle="tab" onClick="open_info();">Info</button>
 										</li>
 										<li class="nav-item">
-											<button type="button" id="btn_toponimi" class="nav-link" onClick="open_toponimi();">Toponimi associati</button>
+											<button type="button" id="btn_toponimi" class="nav-link" data-toggle="tab" onClick="open_toponimi();">Toponimi associati</button>
 										</li>
 										<li class="nav-item">
-											<button type="button" id="btn_riferimenti" class="nav-link" onClick="open_riferimenti();">Riferimenti</button>
+											<button type="button" id="btn_riferimenti" class="nav-link" data-toggle="tab" onClick="open_riferimenti();">Riferimenti</button>
 										</li>
 									</ul>
 								</div>

lettera.html

@@ -95,10 +95,10 @@
 
 								<ul class="nav nav-tabs" id="choice_buttons">
 									<li class="nav-item infoChoice">
-										<button type="button" class="nav-link active" onClick="show_OVI()">OVI</button>
+										<button type="button" class="nav-link active" data-toggle="tab" onClick="show_OVI()">OVI</button>
 									</li>
 									<li class="nav-item infoChoice">
-										<button type="button" class="nav-link" onClick="show_ASPO()">ASPO</button>
+										<button type="button" class="nav-link" data-toggle="tab" onClick="show_ASPO()">ASPO</button>
 									</li>
 								</ul>
 				

standard.html

@@ -152,10 +152,10 @@
                                 <div class="col" id="mappingChoiceSection">
                                     <ul class="nav nav-tabs" id="mapping_buttons">
                                         <li class="nav-item mappingChoice">
-                                            <button type="button" class="nav-link active" onClick="show_ASPO();">EAD to CIDOC</button>
+                                            <button type="button" class="nav-link active" data-toggle="tab" onClick="show_ASPO();">EAD to CIDOC</button>
                                         </li>
                                         <li class="nav-item mappingChoice">
-                                            <button type="button" class="nav-link" onClick="show_MPP();">ICCD to CIDOC</button>
+                                            <button type="button" class="nav-link" data-toggle="tab" onClick="show_MPP();">ICCD to CIDOC</button>
                                         </li>
                                     </ul>
                                     <div id="mappingTables">