Redesign Web API

Normalize Web API method names.
Allow to use alternative Web UI.
Switch Web API version to standard form (i.e. "2.0").
Improve Web UI translation code.
Retranslate changed files.
Add Web API for RSS subsystem.

src/base/utils/fs.cpp

@@ -30,6 +30,10 @@
 
 #include "fs.h"
 
+#include <cstring>
+#include <sys/stat.h>
+#include <sys/types.h>
+
 #include <QDebug>
 #include <QDir>
 #include <QFile>
@@ -47,6 +51,7 @@
 #include <kernel/fs_info.h>
 #else
 #include <sys/vfs.h>
+#include <unistd.h>
 #endif
 
 #include "base/bittorrent/torrenthandle.h"
@@ -281,3 +286,17 @@ QString Utils::Fs::tempPath()
     QDir().mkdir(path);
     return path;
 }
+
+bool Utils::Fs::isRegularFile(const QString &path)
+{
+    struct ::stat st;
+    if (::stat(path.toUtf8().constData(), &st) != 0) {
+        //  analyse erno and log the error
+        const auto err = errno;
+        qDebug("Could not get file stats for path '%s'. Error: %s"
+               , qUtf8Printable(path), qUtf8Printable(strerror(err)));
+        return false;
+    }
+
+    return (st.st_mode & S_IFMT) == S_IFREG;
+}