App update

Submodule web/app 09b1453..e154fd8:
  > Add the reference preview for the marks search page
  > Add the names for the writer palms
  > Retrieve all marks from the database, even if no additinal informations is present
  > Split the configuration file to run on localhost
  > Set the 'pianosendpoint' value to None if no PiAnoS server is available
  > Basic mark detail popup on the search page

app @ e154fd8c

-Subproject commit 09b1453fb7356bb8d7f5ff0d8c97768ab4f54cbc
+Subproject commit e154fd8cc41ebd6d50e6b5d387bbe37e5e91e938