Refactor 'normalizedContextURL' from WorkspaceContext as Optional

Because it can come null from the server, as you can see on interface WorkspaceContext from `components/gitpod-protocol/src/protocol.ts`.

Author: felladrin

components/gitpod-protocol/java/src/main/java/io/gitpod/gitpodprotocol/api/entities/WorkspaceContext.java

@@ -10,8 +10,8 @@ public class WorkspaceContext {
     private String normalizedContextURL;
     private String ref;
 
-    public String getNormalizedContextURL() {
-        return normalizedContextURL;
+    public Optional<String> getNormalizedContextURL() {
+        return Optional.ofNullable(normalizedContextURL);
     }
 
     public void setNormalizedContextURL(String normalizedContextURL) {

components/ide/jetbrains/gateway-plugin/src/main/kotlin/io/gitpod/jetbrains/gateway/GitpodConnectionProvider.kt

@@ -124,10 +124,9 @@ class GitpodConnectionProvider : GatewayConnectionProvider {
                                 }
                             }
                             row {
-                                browserLink(
-                                    workspace.context.normalizedContextURL,
-                                    workspace.context.normalizedContextURL
-                                )
+                                workspace.context.normalizedContextURL.ifPresent {
+                                    browserLink(it, it)
+                                }
                             }
                         }.horizontalAlign(HorizontalAlign.CENTER)
                         row {

components/ide/jetbrains/gateway-plugin/src/main/kotlin/io/gitpod/jetbrains/gateway/GitpodWorkspacesView.kt

@@ -272,9 +272,12 @@ class GitpodWorkspacesView(
                                     }
                                 ).gap(RightGap.SMALL)
                                 panel {
-                                    row {
+                                    val contextUrlRow = row {
                                         browserLink(info.workspace.id, info.latestInstance.ideUrl)
-                                    }.rowComment("<a href='${info.workspace.context.normalizedContextURL}'>${info.workspace.context.normalizedContextURL}</a>")
+                                    }
+                                    info.workspace.context.normalizedContextURL.ifPresent {
+                                        contextUrlRow.rowComment("<a href='${it}'>${it}</a>")
+                                    }
                                 }
                                 label("").resizableColumn().horizontalAlign(HorizontalAlign.FILL)
                                 panel {
@@ -283,11 +286,7 @@ class GitpodWorkspacesView(
                                         it.totalUncommitedFiles + it.totalUntrackedFiles + it.totalUnpushedCommits
                                     } ?: 0
                                     row {
-                                        if (info.workspace.context.ref.isPresent()) {
-                                            label(info.workspace.context.ref.get())
-                                        } else {
-                                            label("(detached)")
-                                        }
+                                        info.workspace.context.ref.ifPresentOrElse({ label(it) },{ label("(detached)") })
                                     }.rowComment(
                                         when {
                                             changes == 1 -> "<b>$changes Change</b>"
@@ -345,4 +344,4 @@ class GitpodWorkspacesView(
         }
         updateLifetime.onTerminationOrNow { job.cancel() }
     }
-}
+}