Switch from Paste for serving to Waitress

Incredibly, it looks like none of our documentation has to change taking
this route...!

lazystarter.sh

@@ -19,34 +19,9 @@
 selfname=$(basename "$0")
 local_bin="./bin"
 
-# Test whether or not gunicorn is installed
-# -----------------------------------------
-if [ -f "${local_bin}/python" ]; then
-    our_python="${local_bin}/python";
-else
-    our_python="python";
-fi
-
-if $our_python -c "import sys
-try:
-    import gunicorn
-    sys.exit(0)
-except ImportError:
-    sys.exit(1)
-"; then
-    use_gunicorn=true;
-else
-    use_gunicorn=false;
-fi
-# -----------------------------------------
-
 case "$selfname" in
     lazyserver.sh)
-        if $use_gunicorn; then
-            starter_cmd=gunicorn;
-        else
-            starter_cmd=paster;
-        fi
+        starter_cmd=paster;
         ini_prefix=paste
         ;;
     lazycelery.sh)
@@ -62,14 +37,9 @@ esac
 if [ "$1" = "-h" ]; then
     echo "$0 [-h] [-c filename.ini] [ARGS_to_${starter_cmd} ...]"
     echo ""
-    if $use_gunicorn; then
-        echo "   For Gunicorn settings, see at:"
-        echo "      http://docs.gunicorn.org/en/19.0/settings.html"
-    else
-        echo "   For example:"
-        echo "         $0 -c fcgi.ini port_number=23371"
-        echo "     or: $0 --server-name=fcgi --log-file=paste.log"
-    fi
+    echo "   For example:"
+    echo "         $0 -c fcgi.ini port_number=23371"
+    echo "     or: $0 --server-name=fcgi --log-file=paste.log"
     echo ""
     echo "   The configfile defaults to ${ini_prefix}_local.ini,"
     echo "   if that is readable, otherwise ${ini_prefix}.ini."
@@ -112,11 +82,7 @@ set -x
 export CELERY_ALWAYS_EAGER=true
 case "$selfname" in
     lazyserver.sh)
-        if $use_gunicorn; then
-            $starter --paste "$ini_file" --log-file=- $@;
-        else
-            $starter serve "$ini_file" "$@" --reload;
-        fi
+        $starter serve "$ini_file" "$@" --reload;
         ;;
     lazycelery.sh)
         MEDIAGOBLIN_CONFIG="${ini_file}" \