Refactoring: new structure for logging alerts

Disruptive actions were moved to actions::disruptive namespace

src/utils/string.cc

@@ -210,7 +210,6 @@ void replaceAll(std::string *str, const std::string& from,
     const std::string& to) {
     size_t start_pos = 0;
     while ((start_pos = str->find(from, start_pos)) != std::string::npos) {
-        size_t end_pos = start_pos + from.length();
         str->replace(start_pos, from.length(), to);
         start_pos += to.length();
     }