Rename header to frequency; update translations

app/src/main/res/layout/show_habit.xml

@@ -110,9 +110,9 @@
             <TextView
                 android:id="@+id/tvWeekdayFreq"
                 style="@style/cardHeaderStyle"
-                android:text="Weekday Frequency"/>
+                android:text="@string/frequency"/>
 
-            <org.isoron.uhabits.views.WeekdayFrequencyView
+            <org.isoron.uhabits.views.HabitFrequencyView
                 android:id="@+id/punchcardView"
                 android:layout_width="match_parent"
                 android:layout_height="200dp"/>

app/src/main/res/values-fr/strings.xml

@@ -95,4 +95,5 @@
 
     <!-- %s will get replaced by the version number. For example, "Versão %d" will become "Versão 1.2.0". -->
     <string name="version_n">"Version %s"</string>
+    <string name="frequency">Fréquence</string>
 </resources>

app/src/main/res/values-pt/strings.xml

@@ -106,4 +106,5 @@
   <string name="developers">Desenvolvedores</string>
   <string name="translators">Tradutores</string>
   <string name="version_n">Versão %s</string>
+  <string name="frequency">Frequência</string>
 </resources>

app/src/main/res/values-zh/strings.xml

@@ -116,4 +116,5 @@
   <string name="translators">翻译者</string>
   <string name="export_to_csv">导出数据</string>
   <string name="version_n">%s版</string>
+  <string name="frequency">频率</string>
 </resources>

app/src/main/res/values/strings.xml

@@ -122,5 +122,6 @@
     <string name="translators">Translators</string>
     <string name="developers">Developers</string>
     <string name="version_n">Version %s</string>
+    <string name="frequency">Frequency</string>
 
 </resources>