Fix loop DB modify in docker with autosave

[rodriciru]

Fixes #189
In docker with autosave option ON, db is continuisly growing because of a loop.
Node.js detect crontab.db is modified -> call a method wich creates some cron and other files, and updates the DB -> Db gets modified by this last update -> Node detects Db is modified.........
Result is a huge db size by only one entry.
This PR disable the loop by setting a boolean on certain methods, and enable the call to the method that updtes the db

[rodriciru]

Can look at this pr, and tell me your opinion?

[alseambusher]

I was thinking of adding your other suggestion https://github.com/louischatriot/nedb#persistence. I am running some tests with it

[rodriciru]

That is a workaround, not a solution. DB constantly grows, but after X time it will be reset.
For me, my PR is a fix, so it only grows when it needs to grow, not every time.
And it dosnt have so much risk to use IMO

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.