[libcalamaresui] "namespace" QML settings

- To avoid name-collisions in otherwise well-behaved
  modules and configurations, make the QML settings
  more specific:
    search -> qmlSearch
    filename -> qmlFilename

src/libcalamaresui/viewpages/QmlViewStep.cpp

@@ -299,13 +299,13 @@ void
 QmlViewStep::setConfigurationMap( const QVariantMap& configurationMap )
 {
     bool ok = false;
-    m_searchMethod = searchNames().find( CalamaresUtils::getString( configurationMap, "search" ), ok );
+    m_searchMethod = searchNames().find( CalamaresUtils::getString( configurationMap, "qmlSearch" ), ok );
     if ( !ok )
     {
         cDebug() << "Bad QML search mode.";
     }
 
-    QString qmlFile = CalamaresUtils::getString( configurationMap, "filename" );
+    QString qmlFile = CalamaresUtils::getString( configurationMap, "qmlFilename" );
     if ( qmlFile.isEmpty() )
     {
         // TODO use the module instance

src/modules/notesqml/notesqml.conf

@@ -24,13 +24,13 @@
 # directory look for the full notesqml@instanceid name as well.
 ---
 # Search mode. Valid values are "both", "qrc" and "branding"
-search: both
+qmlSearch: both
 
 # Name of the QML file. If not set, uses the name of the instance
 # of the module (e.g. if you list this module in `settings.conf`
 # in the *instances* section, you get *id*, otherwise it would
 # normally be "notesqml").
-#filename: notesqml
+# qmlFilename: notesqml
 
 # This is the name of the module in the progress-tree / sidebar
 # in Calamares. To support multiple instances of the QML module,

src/modules/welcomeq/welcomeq.conf

@@ -7,7 +7,7 @@
 # can check requirements for installation.
 ---
 # Setting for QML loading
-search: both
+qmlSearch: both
 # Display settings for various buttons on the welcome page.
 # The URLs themselves come from branding.desc is the setting
 # here is "true". If the setting is false, the button is hidden.