Update taiga front and back

Dockerfile

@@ -13,14 +13,13 @@ RUN apt-get update && apt-get install -y \
     libxml2-dev libxslt-dev \
     && rm -rf /var/cache/apt /var/lib/apt/lists /etc/ssh_host_*
 
-# We don't use release tags but the stable branches from
-# https://github.com/taigaio/taiga-back/tree/stable
+# We don't use release tags but the stable branches
 
-## backend
-RUN curl -L https://github.com/taigaio/taiga-back/archive/61c06538986bf236ba6d0b6bb3ca19a64ad329bb.tar.gz | tar -xz -C /app/code/taiga-back --strip-components 1 -f -
+## backend (https://github.com/taigaio/taiga-back/tree/stable)
+RUN curl -L https://github.com/taigaio/taiga-back/archive/2533507fc1f1c6f407ce8de02a9489d529137b09.tar.gz | tar -xz -C /app/code/taiga-back --strip-components 1 -f -
 
-## frontend
-RUN curl -L https://github.com/taigaio/taiga-front-dist/archive/93bbd82a983d3f7f694bfe3d460221d6ae6701ba.tar.gz | tar -xz -C /app/code/taiga-front-dist --strip-components 1 -f -
+## frontend (https://github.com/taigaio/taiga-front-dist/commits/stable)
+RUN curl -L https://github.com/taigaio/taiga-front-dist/archive/ac88fa2f9127c26173c2dd04e59dd076a3899ab9.tar.gz | tar -xz -C /app/code/taiga-front-dist --strip-components 1 -f -
 
 ADD build.sh nginx.conf conf.json conf_ldap.json local.py local_ldap.py start.sh /app/code/