UI: Fix repeated names in UI files

src/Gui/PreferencePages/DlgSettingsUI.ui

@@ -199,7 +199,7 @@
      <property name="title">
       <string>Tree view</string>
      </property>
-     <layout class="QGridLayout" name="gridLayout" columnstretch="2,1">
+     <layout class="QGridLayout" name="gridLayout1" columnstretch="2,1">
       <item row="5" column="0" colspan="2">
        <widget class="Gui::PrefCheckBox" name="hideInternalNamesCheckBox">
         <property name="toolTip">

src/Mod/Fem/Gui/TaskTetParameter.ui

@@ -23,7 +23,7 @@
    <item>
     <layout class="QHBoxLayout" name="horizontalLayout1">
      <item>
-      <widget class="QLabel" name="label">
+      <widget class="QLabel" name="maxSizeLabel">
        <property name="text">
         <string>Max. Size:</string>
        </property>