Memory info is now a log

[jesusgn90]

Hi team,

Since Kibana is now a bit cheaper regarding the amount of RAM is required, I've removed the RAM toasters. That information is now a log.

At initialize time, if the app could not check the memory due to some error:

error: 2019/04/22 7:48:10: initialize: Could not check total RAM due to: some-error

At initialize time, if the app could check the memory:

info: 2019/04/22 7:49:10: initialize: Total RAM: 3790MB

In any case, it's now less intrusive than before and the information is always saved in a log.

Regards