fix line break in interval input

templates/lib/interval.html

@@ -1,15 +1,17 @@
 {% macro interval_input(obj, attrname, scales) -%}
 
-<input type=number name={{attrname}}_significand
-value={{obj[attrname + '_significand']}}
-min=0 step=1>
-<select name={{attrname}}_scale>
-{%- for scale in scales %}
-    <option value="{{scale[1].total_seconds()}}"
-    {{- ' selected' if scale[1] == obj[attrname + '_scale'] -}}
-    >{{scale[0]}}</option>
-{% endfor -%}
-</select>
+<span style='display:inline-block'>
+    <input type=number name={{attrname}}_significand
+    value={{obj[attrname + '_significand']}}
+    min=0 step=1>
+    <select name={{attrname}}_scale>
+    {%- for scale in scales %}
+        <option value="{{scale[1].total_seconds()}}"
+        {{- ' selected' if scale[1] == obj[attrname + '_scale'] -}}
+        >{{scale[0]}}</option>
+    {% endfor -%}
+    </select>
+</span>
 
 
 {%- endmacro %}