Information in the progress window (example: rescan) is displayed capped to fixed size instead of contents.

<img width="209" alt="screenshot 2018-12-21 at 14 58 20" src="https://user-images.githubusercontent.com/26601261/50345943-0bbd4300-0531-11e9-9c6c-e277ac69eb0c.png">

{
    if (!fAutoStart)
        fs::remove(GetAutostartFilePath());
    else
    {
        char pszExePath[MAX_PATH+1];
        ssize_t r = readlink("/proc/self/exe", pszExePath, sizeof(pszExePath) - 1);
        if (r == -1)
            return false;
        pszExePath[r] = '\0';
        fs::create_directories(GetAutostartDir());
        fsbridge::ofstream optionFile(GetAutostartFilePath(), std::ios_base::out | std::ios_base::trunc);
        if (!optionFile.good())
            return false;
        std::string chain = gArgs.GetChainName();
        
        optionFile << "[Desktop Entry]\n";