replace updater fetch status with enum class

Interface/AppUpdater.cpp

@@ -193,7 +193,7 @@ int AppUpdater::RequestUpdateCheck() {
 }
 
 void AppUpdater::NotifyServerWarning() {
-	if (lastFetchStatus == FetchStatus::NONE) return; //didn't perform an update check yet
+	if (lastFetchStatus == FetchStatus::None) return; //didn't perform an update check yet
     if (nbUpdateFailsInRow >= askAfterNbUpdateFails) {
         // Issue the warning in a new window
         if(!updateWarning) {
@@ -311,20 +311,20 @@ void AppUpdater::PerformUpdateCheck(bool forceCheck) {
                 //availableUpdates.insert(availableUpdates.end(), availableUpdates_old.begin(), availableUpdates_old.end());
                 resultCategory = "updateCheck";
 				resultDetail << "updateCheck_" << applicationName << "_" << currentVersionId;
-                lastFetchStatus = FetchStatus::OKAY;
+                lastFetchStatus = FetchStatus::OK;
             }
 			else { //parse error
                 errorState = true;
 				resultCategory = "parseError";
 				resultDetail << "parseError_" << parseResult.status << "_" << applicationName << "_" << currentVersionId;
-                lastFetchStatus = FetchStatus::PARSE_ERROR;
+                lastFetchStatus = FetchStatus::ParseError;
             }
 		}
 		else { //download error
             errorState = true;
 			resultCategory = "stringDownloadError";
 			resultDetail << "stringDownloadError_" << downloadResult << "_" << applicationName << "_" << currentVersionId;
-		    lastFetchStatus = FetchStatus::DOWNLOAD_ERROR;
+		    lastFetchStatus = FetchStatus::DownloadError;
 		}
 		//Send result for analytics
 
@@ -1111,7 +1111,7 @@ void ManualUpdateCheckDialog::Refresh() {
         }
         else { // no updates found at startup, try again now
             updater->PerformImmediateCheck();
-			if(updater->GetStatus() != (int)FetchStatus::OKAY){
+			if(updater->GetStatus() != FetchStatus::OK){
         	    updateError = true;
         	}
 			if (updater->IsUpdateAvailable()) {

Interface/AppUpdater.h

@@ -193,11 +193,13 @@ private:
     UpdateFoundDialog* foundWnd;
 };
 
-enum FetchStatus
+enum class FetchStatus
 {
-	NONE = 0,
-	DOWNLOAD_ERROR = 1,
-	OTHER_ERROR = 2, OKAY, PARSE_ERROR
+	None = 0,
+	DownloadError = 1,
+	OtherError = 2,
+	OK,
+	ParseError
 };
 
 class AppUpdater {
@@ -235,7 +237,7 @@ private:
 
 	//Initialized by constructor:
 	int currentVersionId;
-	FetchStatus lastFetchStatus = FetchStatus::NONE;
+	FetchStatus lastFetchStatus = FetchStatus::None;
 	std::string applicationName;
 	std::string configFileName;