Added replicas variables for core containers

- Added back restart: always on compose flavor
- Moved Log driver from .env to docker-compose.yml

setup/templates/steps/stack/04_replicas.html

@@ -0,0 +1,28 @@
+{% call macros.panel("info", "Step 5 - Number of replicas for containers") %}
+<p>Select number of replicas for containers</p>
+
+<div class="form-group">
+  <input class="form-control" type="number" name="front_replicas" min="1" required value="1"
+  		style="width: 6%; display: inline;">
+  <label>Front</label>
+</div>
+
+<div class="form-group">
+  <input class="form-control" type="number" name="admin_replicas" min="1" required value="1"
+  		style="width: 6%; display: inline;">
+  <label>Admin</label>
+</div>
+
+<div class="form-group">
+  <input class="form-control" type="number" name="imap_replicas" min="1" required value="1"
+  		style="width: 6%; display: inline;">
+  <label>IMAP</label>
+</div>
+
+<div class="form-group">
+  <input class="form-control" type="number" name=smtp_replicas min="1" required value="1"
+  		style="width: 6%; display: inline;">
+  <label>SMPT</label>
+</div>
+
+{% endcall %}