Fix typos in comments and Javadocs (#234)

Signed-off-by: siddiqueirshad <mohdirshad1306@gmail.com>
diff --git a/app/src/main/java/org/apache/roller/planet/pojos/Subscription.java b/app/src/main/java/org/apache/roller/planet/pojos/Subscription.java
index 552565f..dbb719b 100644
--- a/app/src/main/java/org/apache/roller/planet/pojos/Subscription.java
+++ b/app/src/main/java/org/apache/roller/planet/pojos/Subscription.java
@@ -207,12 +207,12 @@
     }
 
 
-    // for backwards compatability?
+    // for backwards compatibility?
     public String getName() {
         return getTitle();
     }
     
-    // for backwards compatability?
+    // for backwards compatibility?
     public String getURL() {
         return siteUrl;
     }
diff --git a/app/src/main/java/org/apache/roller/weblogger/business/plugins/PluginManagerImpl.java b/app/src/main/java/org/apache/roller/weblogger/business/plugins/PluginManagerImpl.java
index 27c77e9..e370bee 100644
--- a/app/src/main/java/org/apache/roller/weblogger/business/plugins/PluginManagerImpl.java
+++ b/app/src/main/java/org/apache/roller/weblogger/business/plugins/PluginManagerImpl.java
@@ -147,7 +147,7 @@
     /**
      * Initialize PagePlugins declared in roller.properties.
      * By using the full class name we also allow for the implementation of
-     * "external" Plugins (maybe even packaged seperately). These classes are
+     * "external" Plugins (maybe even packaged separately). These classes are
      * then later instantiated by PageHelper.
      */
     private void loadPagePluginClasses() {
diff --git a/app/src/main/java/org/apache/roller/weblogger/business/themes/ThemeInitializationException.java b/app/src/main/java/org/apache/roller/weblogger/business/themes/ThemeInitializationException.java
index 9057745..3e24f21 100644
--- a/app/src/main/java/org/apache/roller/weblogger/business/themes/ThemeInitializationException.java
+++ b/app/src/main/java/org/apache/roller/weblogger/business/themes/ThemeInitializationException.java
@@ -22,7 +22,7 @@
 
 
 /**
- * Thrown when there is a problem initalizing a theme object.
+ * Thrown when there is a problem initializing a theme object.
  */
 public class ThemeInitializationException extends WebloggerException {
     
diff --git a/app/src/main/java/org/apache/roller/weblogger/ui/core/filters/IPBanFilter.java b/app/src/main/java/org/apache/roller/weblogger/ui/core/filters/IPBanFilter.java
index 2846d82..31b3089 100644
--- a/app/src/main/java/org/apache/roller/weblogger/ui/core/filters/IPBanFilter.java
+++ b/app/src/main/java/org/apache/roller/weblogger/ui/core/filters/IPBanFilter.java
@@ -33,7 +33,7 @@
 
 
 /**
- * Simple IP restriction filter.  Denied clients get a 404 reponse.
+ * Simple IP restriction filter.  Denied clients get a 404 response.
  *
  * @web.filter name="IPBanFilter"
  */
diff --git a/app/src/main/java/org/apache/roller/weblogger/ui/rendering/util/WeblogPageRequest.java b/app/src/main/java/org/apache/roller/weblogger/ui/rendering/util/WeblogPageRequest.java
index bdf766e..bbdbc7f 100644
--- a/app/src/main/java/org/apache/roller/weblogger/ui/rendering/util/WeblogPageRequest.java
+++ b/app/src/main/java/org/apache/roller/weblogger/ui/rendering/util/WeblogPageRequest.java
@@ -198,7 +198,7 @@
          * weblog entry (old way) entry - specifies a weblog entry
          * 
          * we only allow request params if the path info is null or on user
-         * defined pages (for backwards compatability). this way we prevent
+         * defined pages (for backwards compatibility). this way we prevent
          * mixing of path based and query param style urls.
          */
         if (pathInfo == null || this.weblogPageName != null) {