fixes: german were not added in repository

diff --git a/index.de.php b/index.de.php
new file mode 120000 (symlink)
index 0000000..0012f7d
--- /dev/null
+++ b/index.de.php
@@ -0,0 +1 @@
+index.php
\ No newline at end of file

diff --git a/install.de.php b/install.de.php
new file mode 120000 (symlink)
index 0000000..94a71af
--- /dev/null
+++ b/install.de.php
@@ -0,0 +1 @@
+install.php
\ No newline at end of file

diff --git a/upgrade.de.php b/upgrade.de.php
new file mode 120000 (symlink)
index 0000000..2e231bc
--- /dev/null
+++ b/upgrade.de.php
@@ -0,0 +1 @@
+upgrade.php
\ No newline at end of file