Various fixes

- Fix nginx paths for db component
- Install ghostscript packages used for PDF manipulation

Change-Id: I3bc6bb33ca33cc38c527933d171d4858d5ec2482
diff --git a/tasks/Debian.yml b/tasks/Debian.yml
index 95366c6..4d214df 100644
--- a/tasks/Debian.yml
+++ b/tasks/Debian.yml
@@ -9,6 +9,8 @@
   apt:
     name:
       - "git"
+      - "ghostscript"
+      - "graphicsmagick"
     state: "present"
     update_cache: true
     cache_valid_time: 3600