[IMPAC-741] Lmi widgets improvement

[iseessel]

@MarcoBgn

[MarcoBgn]

I will also ask for a new branch on Maestrano's, so PR's can be reviewed and managed there.

[xaun]

Approving the changes as Marco asked for a review, as you would know @iseessel, if this is going to be merged into maestrano releases, it will need to be changed for your refactor on the HighchartsFactory. If not then the addition are ok for me.

[iseessel]

@MarcoBgn The left axis represents average visits per customer which is: "The total transaction count at the store divided by the number of customers in the same time period."

As far as I'm concerned, this is not a $ , but are number of transactions per person.

[MarcoBgn]

@iseessel yes, definitely. My bad, I rushed through and thought about the average spend. I have deleted the comment. Just waiting for the branch to be created 👍

[iseessel]

@MarcoBgn Sounds great!

@xaun And believe me that has occurred to me ;).