Use HTTP Post operation for resetting memory monitoring state.

Fixes issue #145

Also added textual hint on the button, and display it only when it makes
sense, that is to say when the memory state is 'exhausted'.

htroot/PerformanceQueues_p.java

@@ -62,6 +62,10 @@ public class PerformanceQueues_p {
         	/* Check the transaction is valid : validation apply then for every uses of this post parameter */
         	TransactionManager.checkPostTransaction(header, post);
         	
+            if(post.containsKey("resetObserver")) {
+            	/* The the reset state button is pushed, we only perform this action and do not save other form field values at the same time */
+            	MemoryControl.resetProperState();
+            } else {
             	if(post.containsKey("defaultFile")){
             		// TODO check file-path!
             		final File value = new File(sb.getAppPath(), post.get("defaultFile", "defaults/yacy.init"));
@@ -108,8 +112,6 @@ public class PerformanceQueues_p {
             	if(post.containsKey("memoryAcceptDHT")) {
             		sb.setConfig(SwitchboardConstants.MEMORY_ACCEPTDHT, post.getInt("memoryAcceptDHT", 50));
             	}
-            if(post.containsKey("resetObserver")) {
-            	MemoryControl.resetProperState();
             }
         }
         final Map<String, String> defaultSettings = ((post == null) || (!(post.containsKey("submitdefault")))) ? null : FileUtils.loadMap(defaultSettingsFile);

htroot/Performance_p.html

@@ -126,8 +126,9 @@
         			<span class="info">
         				<img src="env/grafics/i16.gif" width="16" height="16" alt="Exhausted state info"/>
         				<span class="infobox" id="exhaustedStateInfo">Within the last eleven minutes, at least four operations have tried to request memory that would have reduced free space within the minimum required.</span>
-        			</span>#(/observerTrigger)#
-        			<a href="?resetObserver=">[reset state]</a>
+        			</span>
+        			<input type="submit" class="btn btn-warning" name="resetObserver" value="Reset state" title="Manually reset to 'proper' state"/>
+        			#(/observerTrigger)#
         		</div>
           		<div class="form-group">
           			<label for="memoryAcceptDHT">Minimum required</label>

locales/de.lng

@@ -2433,7 +2433,7 @@ Memory Settings==Speicher Einstellungen
 Memory reserved for <abbr title="Java Virtual Machine">JVM</abbr>==Für <abbr title="Java Virtual Machine">JVM</abbr> reservierter Speicher
 "Set"=="Setzen"
 Resource Observer==Ressourcen Beobachter
-reset state==Status zurücksetzen
+Reset state==Status zurücksetzen
 > free space==> freiem Speicher
 disable <abbr title="Distributed Hash Table">DHT</abbr>-in below==Deaktivere eingehende <abbr title="Distributed Hash Table">DHT</abbr> Transfers unter
 <abbr title="Random Access Memory">RAM</abbr>==Arbeitsspeicher

locales/fr.lng

@@ -1482,7 +1482,8 @@ Resource Observer==Contrôle des ressources
 Memory state==État de la mémoire
 >proper<==>sain<
 >exhausted<==>espace libre insuffisant<
-reset state==réinitialiser l'état
+Reset state==Réinitialiser l'état
+Manually reset to 'proper' state==Réinitialiser manuellement à l'état 'sain'
 Enough memory is available for proper operation.==Il y a suffisamment de mémoire à disposition pour un fonctionnement correct.
 Within the last eleven minutes, at least four operations have tried to request memory that would have reduced free space within the minimum required.==Durant les onze dernières minutes, au moins quatre opérations ont tenté d'obtenir une quantité de mémoire qui aurait réduit l'espace libre en-deçà du minimum requis.
 Minimum required==Minimum requis

locales/master.lng.xlf

@@ -6692,7 +6692,10 @@
        <source>&gt;exhausted&lt;</source>
     </trans-unit>
     <trans-unit id="7ade7e80" xml:space="preserve" approved="no" translate="yes">
-       <source>reset state</source>
+       <source>Reset state</source>
+    </trans-unit>
+    <trans-unit id="6d08abc8" xml:space="preserve" approved="no" translate="yes">
+       <source>Manually reset to 'proper' state</source>
     </trans-unit>
     <trans-unit id="a5c476c2" xml:space="preserve" approved="no" translate="yes">
        <source>Enough memory is available for proper operation.</source>

locales/ru.lng

@@ -2540,7 +2540,7 @@ Memory Settings==Настройки оперативной памяти
 Memory reserved for <abbr title="Java Virtual Machine">JVM</abbr>==Резервирование динамической памяти для Java
 "Set"=="Сохранить"
 Resource Observer==Обзор ресурсов
-reset state==сбросить состояние
+Reset state==сбросить состояние
 > free space==> свободного места
 disable <abbr title="Distributed Hash Table">DHT</abbr>-in below==Остановить <abbr title="Distributed Hash Table">DHT</abbr>-приём при достижении
 Accepted change. This will take effect after <strong>restart</strong> of YaCy==Изменения будут применены после <strong>перезапуска</strong> YaCy

locales/uk.lng

@@ -2172,7 +2172,7 @@ Memory Settings==Налаштування пам’яті
 Memory reserved for <abbr title="Java Virtual Machine">JVM</abbr>==Пам’ять, утримувана для <abbr title="Java Virtual Machine">JVM</abbr>
 "Set"=="Виставити"
 Resource Observer==Спостерігач за ресурсами
-reset state==відновити стан
+Reset state==відновити стан
 > free space==> вільної пам’яті
 disable <abbr title="Distributed Hash Table">DHT</abbr>-in below==Вимкнути отримання <abbr title="Distributed Hash Table">DHT</abbr> при менше
 <abbr title="Random Access Memory">RAM</abbr>==Основна пам’ять

locales/zh.lng

@@ -2003,7 +2003,7 @@ Memory Settings==内存设置
 Memory reserved for <abbr title="Java Virtual Machine">JVM</abbr>==<abbr title="Java Virtual Machine">JVM</abbr>内存设置
 "Set"=="设置"
 Resource Observer==资源查看
-reset state==重置
+Reset state==重置
 > free space==> 空闲空间
 disable <abbr title="Distributed Hash Table">DHT</abbr>-in below==停止接收<abbr title="Distributed Hash Table">DHT</abbr>当低于
 <abbr title="Random Access Memory">RAM</abbr>==内存