Replace lodash/merge with a very simple deep merge

[KidkArolis]

This is by no means an equivalent function, but I'm just wondering - isn't this enough?

In fact, maybe the updateProxyById code could be restructured to avoid the need to deep merge in the first place? I'm not familiar with the code enough to know if this merge replacement is sufficient to merge renderOptions and componentOptions.

Note, even arrays are merged differently using this code:

var object = {
  'a': [{ 'b': 2 }, { 'd': 4 }]
};
 
var other = {
  'a': [{ 'c': 3 }, { 'e': 5 }]
};
 
_.merge(object, other);
// => positional merge { 'a': [{ 'b': 2, 'c': 3 }, { 'd': 4, 'e': 5 }] }

merge(object, other);
// => concat the arrays { 'a': [{ 'b': 2, 'd': 4, 'c': 3, 'e': 5 }] }

Fix #1269

[KidkArolis]

Reading the comments further in #1269, I'll see if I can remove merge entirely..

[theKashey]

:killitwithfire: