Spelling fixes in changelogs, Javadoc, logs and UI (#2718)

* spelling: abstract

* spelling: about

* spelling: absolute

* spelling: across

* spelling: activity

* spelling: actually

* spelling: addition

* spelling: allocating

* spelling: ambiguous

* spelling: analyzes

* spelling: analysis

* spelling: another

* spelling: appear

* spelling: arbitrary

* spelling: artifact

* spelling: assignment

* spelling: associated

* spelling: augment

* spelling: authentication

* spelling: automatically

* spelling: available

* spelling: availability

* spelling: because

* spelling: background

* spelling: beginning

* spelling: boolean

* spelling: browsers

* spelling: building

* spelling: calculation

* spelling: channel

* spelling: column

* spelling: concatenation

* spelling: connect

* spelling: contribute

* spelling: convert

* spelling: copied

* spelling: couldn't

* spelling: scrambled

* spelling: creates-a

* spelling: curr-entry

* spelling: customize

* spelling: diagnostic

* spelling: contain

* spelling: default

* spelling: delimiter

* spelling: descriptor

* spelling: disambiguates

* spelling: different

* spelling: diligently

* spelling: disabled

* spelling: discovered

* spelling: display

* spelling: doesn't

* spelling: dollar

* spelling: downstream

* spelling: dynamically

* spelling: preemptively

* spelling: encrypt

* spelling: erroneous

* spelling: examine

* spelling: existence

* spelling: value

* spelling: february

* spelling: handling

* spelling: hostname

* spelling: convenient

* spelling: identify

* spelling: implementation

* spelling: incorrect

* spelling: individual

* spelling: initialization

* spelling: initialized

* spelling: inputstream

* spelling: instantiated

* spelling: instantiation

* spelling: intended

* spelling: interpreted

* spelling: interrupted

* spelling: invocations

* spelling: kern

* spelling: localization

* spelling: logger

* spelling: malfunctioning

* spelling: methods

* spelling: monitor

* spelling: mutator

* spelling: multiple

* spelling: object

* spelling: configured

* spelling: optionally

* spelling: option

* spelling: overridden

* spelling: parameterized

* spelling: parent

* spelling: permissions

* spelling: plugin

* spelling: potentially

* spelling: preferable

* spelling: problems like

* spelling: programmatically

* spelling: property

* spelling: reallocate

* spelling: recommended

* spelling: redirected

* spelling: registered

* spelling: reliable

* spelling: remember

* spelling: recurrence

* spelling: repeatable

* spelling: repeated

* spelling: resource

* spelling: retrieve

* spelling: returned

* spelling: revision

* spelling: sandwich

* spelling: separator

* spelling: serialization

* spelling: settings

* spelling: shadow

* spelling: should

* spelling: someone

* spelling: source

* spelling: specified

* spelling: style

* spelling: subversion

* spelling: sufficient

* spelling: supplementary

* spelling: suppressing

* spelling: synchronization

* spelling: synchronized

* spelling: this

* spelling: transitioning

* spelling: termination

* spelling: trying

* spelling: truncatable

* spelling: unknown

* spelling: undeployed

* spelling: unnecessary

* spelling: unparseable

* spelling: update

* spelling: upper

* spelling: verify

* spelling: visible

* spelling: warning

* spelling: we're

* spelling: whitespace

* spelling: wide

* spelling: with

* spelling: workspace

* spelling: yielding

* spelling: to

* spelling: by

* spelling: the

* spelling: hours

core/src/main/java/hudson/PluginManager.java

@@ -942,7 +942,7 @@ public abstract class PluginManager extends AbstractModelObject implements OnMas
      * If the war file has any "/WEB-INF/plugins/[*.jpi | *.hpi]", extract them into the plugin directory.
      *
      * @return
-     *      File names of the bundled plugins. Like {"ssh-slaves.hpi","subvesrion.jpi"}
+     *      File names of the bundled plugins. Like {"ssh-slaves.hpi","subversion.jpi"}
      * @throws Exception
      *      Any exception will be reported and halt the startup.
      */
@@ -1011,7 +1011,7 @@ public abstract class PluginManager extends AbstractModelObject implements OnMas
         URLConnection uc = url.openConnection();
         InputStream in = null;
         // Magic, which allows to avoid using stream generated for JarURLConnection.
-        // It prevents getting into JENKINS-37332 due to the file desciptor leak 
+        // It prevents getting into JENKINS-37332 due to the file descriptor leak 
         if (uc instanceof JarURLConnection) {
             final JarURLConnection jarURLConnection = (JarURLConnection) uc;
             final String entryName = jarURLConnection.getEntryName();
@@ -1050,7 +1050,7 @@ public abstract class PluginManager extends AbstractModelObject implements OnMas
     /*package*/ static long getModificationDate(@Nonnull URL url) throws IOException {
         URLConnection uc = url.openConnection();
         
-        // It prevents file desciptor leak if the URL references a file within JAR
+        // It prevents file descriptor leak if the URL references a file within JAR
         // See JENKINS-37332  for more info
         // The code idea is taken from https://github.com/jknack/handlebars.java/pull/394
         if (uc instanceof JarURLConnection) {
@@ -1225,7 +1225,7 @@ public abstract class PluginManager extends AbstractModelObject implements OnMas
         for (PluginWrapper p : activePlugins) {
             if (p.classLoader==cl) {
                 if (oneAndOnly!=null)
-                    return null;    // ambigious
+                    return null;    // ambiguous
                 oneAndOnly = p;
             }
         }
@@ -1419,7 +1419,7 @@ public abstract class PluginManager extends AbstractModelObject implements OnMas
                     UpdateSite.Plugin plugin = getPlugin(pluginName, siteName);
                     // There could be cases like:
                     // 'plugin.ambiguous.updatesite' where both
-                    // 'plugin' @ 'ambigiuous.updatesite' and 'plugin.ambiguous' @ 'updatesite' resolve to valid plugins
+                    // 'plugin' @ 'ambiguous.updatesite' and 'plugin.ambiguous' @ 'updatesite' resolve to valid plugins
                     if (plugin != null) {
                         if (p != null) {
                             throw new Failure("Ambiguous plugin: " + n);