created and tested server side water control

app/client/state.html

@@ -0,0 +1,18 @@
+<template name="state">
+
+<h1> Controller state</h1>
+<div>
+{{#with controller_state}}
+  <div>Controller broj: {{controller_id}}</div>
+  <div>Otpusni ventil: {{pretty_valve state.out_valve }}</div>
+  <div>Stanje postavio: {{ set_by }}</div>
+  <div>Zadnja komunikacija: {{time}}</div>
+{{/with}}
+</div>
+
+<div>
+<button id="water_now">Zalij sada</button>
+<button id="stop_water_now">Prekini zalijevanje</button>
+</div>
+
+</template>