AppManager: Let client override config files during update

Take old input and merge with the new one.

Change-Id: I2d8ad0e5f0cef97a3efa23aa9ca0c7f9163e703b
diff --git a/.gitignore b/.gitignore
index 27c244d..a4db0a6 100644
--- a/.gitignore
+++ b/.gitignore
@@ -15,4 +15,6 @@
 *_arm64
 *_amd64
 .vscode/
-.hugo_build.lock
\ No newline at end of file
+.hugo_build.lock
+dist
+node_modules
\ No newline at end of file