TOBAGO-2012: Replace popup implementation from bootstrap to own

* first implementation
* wip!
diff --git a/tobago-theme/tobago-theme-standard/pom.xml b/tobago-theme/tobago-theme-standard/pom.xml
index 4f56119..1efe32c 100644
--- a/tobago-theme/tobago-theme-standard/pom.xml
+++ b/tobago-theme/tobago-theme-standard/pom.xml
@@ -61,11 +61,6 @@
     </dependency>
     <dependency>
       <groupId>org.webjars</groupId>
-      <artifactId>bootstrap</artifactId>
-      <version>4.3.1</version>
-    </dependency>
-    <dependency>
-      <groupId>org.webjars</groupId>
         <artifactId>tether</artifactId>
       <version>1.4.0</version>
     </dependency>