Make serviceuser work with Gerrit setups with context paths

Solves: bug 350779993
Release-Notes: Make serviceuser plugin work with context paths
Change-Id: I1a5e9f9db82eee44035fb8300de011d9568ef178

web/gr-serviceuser-create.ts

diff --git a/web/gr-serviceuser-create.ts b/web/gr-serviceuser-create.ts
index 2e6367d..4f49e4e 100644
--- a/web/gr-serviceuser-create.ts
+++ b/web/gr-serviceuser-create.ts
@@ -221,9 +221,12 @@
   }
 
   private forwardToDetails() {
-    window.location.href = `${
-      window.location.origin
-    }/x/${this.plugin.getPluginName()}/user/${this.accountId}`;
+    window.location.href = `${this.getPluginBaseURL()}/user/${this.accountId}`;
+  }
+
+  private getPluginBaseURL() {
+    var href = window.location.href;
+    return href.substring(0, href.lastIndexOf('/create'));
   }
 
   private getConfig() {

web/gr-serviceuser-list.ts

diff --git a/web/gr-serviceuser-list.ts b/web/gr-serviceuser-list.ts
index b4bece4..dc22fe8 100644
--- a/web/gr-serviceuser-list.ts
+++ b/web/gr-serviceuser-list.ts
@@ -210,14 +210,15 @@
   }
 
   private computeServiceUserUrl(id: AccountId) {
-    return `${
-      window.location.origin
-    }/x/${this.plugin.getPluginName()}/user/${id}`;
+    return `${this.getPluginBaseURL()}/user/${id}`;
   }
 
   private createNewServiceUser() {
-    window.location.href = `${
-      window.location.origin
-    }/x/${this.plugin.getPluginName()}/create`;
+    window.location.href = `${this.getPluginBaseURL()}/create`;
+  }
+
+  private getPluginBaseURL() {
+    var href = window.location.href;
+    return href.substring(0, href.lastIndexOf('/list'));
   }
 }