remove surplus locale definition from images building upon base (#165)

* remove surplus locale configuration (should only be in base image)
update konnect
add version to ldap and ldap_demo images
* also create a tag for the ldap images
* add ldap version to compose file

python/Dockerfile

@@ -38,10 +38,4 @@ RUN \
     apt-get update && apt-get install -y --no-install-recommends \
         python3-kopano \
         ${ADDITIONAL_KOPANO_PACKAGES} \
-    && rm -rf /var/cache/apt /var/lib/apt/lists
-
-# configure basics
-RUN sed -i -e 's/# en_US.UTF-8 UTF-8/en_US.UTF-8 UTF-8/' /etc/locale.gen && \
-    sed -i -e 's/# de_DE.UTF-8 UTF-8/de_DE.UTF-8 UTF-8/' /etc/locale.gen && \
-    dpkg-reconfigure --frontend=noninteractive locales && \
-    update-locale LANG=en_US.UTF-8
+    && rm -rf /var/cache/apt /var/lib/apt/lists