Revert "(TO REVERT) changed app name/id to install on real device"

This reverts commit 131fd97.

Author: sguerrini97

app/build.gradle

@@ -4,7 +4,7 @@ android {
     compileSdkVersion 30
     buildToolsVersion "30.0.2"
     defaultConfig {
-        applicationId "org.grapheneos.pdfviewer.sguerrini97"
+        applicationId "org.grapheneos.pdfviewer"
         minSdkVersion 24
         targetSdkVersion 30
         versionCode 6

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

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <resources>
-    <string name="app_name">(sguerrini97) PDF Viewer</string>
+    <string name="app_name">PDF Viewer</string>
     <!--<string name="action_settings">Settings</string>-->
     <string name="action_previous">Previous page</string>
     <string name="action_next">Next page</string>