[fix]工程管理:

修复产品型号管理的bug
添加产品型号：
1、“设备管理”“设备名称”“规格说明”“差异说明”字段改为必填项，用“*”显示
2、“图片地址”字段改为“附件”，可添加图片

ruoyi-admin/src/main/resources/templates/system/model/add.html

@@ -9,38 +9,38 @@
 <div id="app" class="wrapper wrapper-content animated fadeInRight ibox-content">
     <form class="form-horizontal m" id="form-model-add">
         <div class="form-group">
-            <label class="col-sm-3 control-label">设备型号：</label>
-            <div class="col-sm-8">
-                <input name="equipModel" class="form-control" type="text">
+            <label class="col-sm-4 control-label is-required">设备型号：</label>
+            <div class="col-sm-7">
+                <input name="equipModel" class="form-control" type="text" required>
             </div>
         </div>
         <div class="form-group">
-            <label class="col-sm-3 control-label">设备名称：</label>
-            <div class="col-sm-8">
-                <input name="equipName" class="form-control" type="text">
+            <label class="col-sm-4 control-label is-required">设备名称：</label>
+            <div class="col-sm-7">
+                <input name="equipName" class="form-control" type="text" required>
             </div>
         </div>
         <div class="form-group">
-            <label class="col-sm-3 control-label">规格说明：</label>
-            <div class="col-sm-8">
-                <input name="specification" class="form-control" type="text">
+            <label class="col-sm-4 control-label is-required">规格说明：</label>
+            <div class="col-sm-7">
+                <input name="specification" class="form-control" type="text" required>
             </div>
         </div>
         <div class="form-group">
-            <label class="col-sm-3 control-label">差异说明：</label>
-            <div class="col-sm-8">
-                <input name="differences" class="form-control" type="text">
+            <label class="col-sm-4 control-label is-required">差异说明：</label>
+            <div class="col-sm-7">
+                <input name="differences" class="form-control" type="text" required>
             </div>
         </div>
         <div class="form-group">
-            <label class="col-sm-3 control-label">备注：</label>
-            <div class="col-sm-8">
+            <label class="col-sm-4 control-label">备注：</label>
+            <div class="col-sm-7">
                 <input name="remark" class="form-control" type="text">
             </div>
         </div>
         <div class="form-group">
-            <label class="col-sm-2 control-label">照片：</label>
-            <div class="col-sm-10">
+            <label class="col-sm-4 control-label">附件：</label>
+            <div class="col-sm-6">
                 <el-upload
                         :action="fileUploadUrl"
                         :on-success="uploadSuccess"