ui: Indexing UI

* Added DialogView with QtDialogView implementation to handle information dialogs
* Implemented QtIndexingDialog class that covers all different dialogs for indexing
* Directly communicate with DialogView from Prpject and all Tasks involved in indexing
* Block QtMainWindow UI while indexing

src/lib/utility/scheduling/TaskGroupSequential.cpp

@@ -43,12 +43,9 @@ void TaskGroupSequential::exit()
 
 void TaskGroupSequential::interrupt()
 {
-	if (m_taskIndex >= 0 && size_t(m_taskIndex) < m_tasks.size())
+	for (size_t i = 0; i < m_tasks.size(); i++)
 	{
-		for (int i = m_taskIndex; i >= 0; i--)
-		{
-			m_tasks[i]->interruptTask();
-		}
+		m_tasks[i]->interruptTask();
 	}
 }
 
@@ -59,3 +56,8 @@ void TaskGroupSequential::revert()
 		m_tasks[i]->interruptTask();
 	}
 }
+
+void TaskGroupSequential::abort()
+{
+	interrupt();
+}