Update git submodules

* Update docs/submodules/qtip from branch 'master'
  - Merge "Define Database models"
  - Define Database models

     - Add dbfile to gitignore
     - Add models Repo and Task
     - Register models for Django Admin

    Change-Id: I46f23b0cb4deba2efc874cceb93251010ebb2860
    Signed-off-by: akhilbatra898 <akhil.batra@research.iiit.ac.in>

diff --git a/docs/submodules/qtip b/docs/submodules/qtip
index 77828bd..5e72fe0 160000 (submodule)
--- a/docs/submodules/qtip
+++ b/docs/submodules/qtip
@@ -1 +1 @@
-Subproject commit 77828bdd6821c8c8eb0ffe57cf423563e06853f7
+Subproject commit 5e72fe064674a69fed1d2d52d63207675b66832d