Fix for RTL layout detection crash on < API 17

Fixes #6987
// FREEBIE

src/org/thoughtcrime/securesms/ConversationItem.java

@@ -27,6 +27,7 @@ import android.net.Uri;
 import android.os.AsyncTask;
 import android.support.annotation.NonNull;
 import android.support.annotation.Nullable;
+import android.support.v4.view.ViewCompat;
 import android.support.v7.app.AlertDialog;
 import android.text.SpannableString;
 import android.text.Spanned;
@@ -222,7 +223,7 @@ public class ConversationItem extends LinearLayout
                                content.getPaddingTop() + groupSenderHolder.getMeasuredHeight());
 
 
-      if (DynamicLanguage.getLayoutDirection(context) == LAYOUT_DIRECTION_RTL) {
+      if (ViewCompat.getLayoutDirection(groupSenderProfileName) == ViewCompat.LAYOUT_DIRECTION_RTL) {
         groupSenderProfileName.layout(groupSenderHolder.getPaddingLeft(),
                                       groupSenderHolder.getPaddingTop(),
                                       groupSenderHolder.getPaddingLeft() + groupSenderProfileName.getWidth(),

src/org/thoughtcrime/securesms/components/FromTextView.java

@@ -3,6 +3,7 @@ package org.thoughtcrime.securesms.components;
 import android.content.Context;
 import android.content.res.TypedArray;
 import android.graphics.Typeface;
+import android.support.v4.view.ViewCompat;
 import android.text.Spannable;
 import android.text.SpannableString;
 import android.text.SpannableStringBuilder;
@@ -61,7 +62,7 @@ public class FromTextView extends EmojiTextView {
       profileName.setSpan(new TypefaceSpan("sans-serif-light"), 0, profileName.length(), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
       profileName.setSpan(new ForegroundColorSpan(ResUtil.getColor(getContext(), R.attr.conversation_list_item_subject_color)), 0, profileName.length(), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
 
-      if (DynamicLanguage.getLayoutDirection(getContext()) == LAYOUT_DIRECTION_RTL){
+      if (ViewCompat.getLayoutDirection(this) == ViewCompat.LAYOUT_DIRECTION_RTL){
         builder.append(profileName);
         builder.append(fromSpan);
       } else {

src/org/thoughtcrime/securesms/util/DynamicLanguage.java

@@ -8,6 +8,7 @@ import android.content.Intent;
 import android.content.res.Configuration;
 import android.os.Build.VERSION;
 import android.os.Build.VERSION_CODES;
+import android.support.annotation.RequiresApi;
 import android.text.TextUtils;
 
 import java.util.Locale;
@@ -42,7 +43,7 @@ public class DynamicLanguage {
     return currentLocale;
   }
 
-  @TargetApi(VERSION_CODES.JELLY_BEAN_MR1)
+  @RequiresApi(VERSION_CODES.JELLY_BEAN_MR1)
   public static int getLayoutDirection(Context context) {
     Configuration configuration = context.getResources().getConfiguration();
     return configuration.getLayoutDirection();