Changes: add credit for %p

While here, add a disambiguation to help translators.

CHANGES-3.3

@@ -14,6 +14,7 @@ This release contains contributions from (alphabetically by first name):
  - Adriaan de Groot
  - Aleksey Samoilov
  - Anke Boersma
+ - Emir Sari
  - Evan James
  - Jeremy Attall
  - Johannes Kamprad
@@ -34,6 +35,7 @@ This release contains contributions from (alphabetically by first name):
  - The `INSTALL_CONFIG` option has been removed. If you are installing
    the example configuration files from the Calamares repository, just
    stop. That was never a good idea, and you should keep your configs elsewhere.
+ - Progress percentage during install can now be localized. (thanks Emir)
 
 ## Modules ##
  - *dracut* added a configurable kernel name. (thanks Anke)

src/libcalamaresui/viewpages/ExecutionViewStep.cpp

@@ -73,7 +73,7 @@ ExecutionViewStep::ExecutionViewStep( QObject* parent )
 {
     m_widget->setObjectName( "slideshow" );
     m_progressBar->setObjectName( "exec-progress" );
-    m_progressBar->setFormat(tr("%p%"));
+    m_progressBar->setFormat(tr("%p%", "Progress percentage indicator: %p is where the number 0..100 is placed"));
     m_label->setObjectName( "exec-message" );
 
     QVBoxLayout* layout = new QVBoxLayout( m_widget );