Fix to fflib_SObjectMocks.registerDirty(SObject, SObjectField, SObject)

[janskola]

Fix to registerDirty(SObject, SObjectField, SObject) method with relationship registration

• allows correct verification using fflib_Match for all parameters
• follows existing implementation of registerNew with relationship and registerRelationship

Other smaller formatting changes without affecting functionality

• using Schema.SObjectField instead of Schema.sObjectField (Salesforce preferred name AFAIK)
• readability improvements in formatting long lines, unified style
• indentation fix for methods commitWork() and below

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This change is 

[ImJohnMDaniel]

@janskola -- thank you for the submission.

Since this PR is meant to fix somethings, before we proceed with the review, please open a corresponding issue outlining what the details are around this issue and how to reproduce it.

Thanks for the help.

cc: @stohn777 and @daveespo

[janskola]

Thank you for pointing me in the right direction, I've opened issue #416 describing the misbehavior. This PR proposal is fixing the issue.

[janskola]

Hello @ImJohnMDaniel,
I've probably done something wrong with this PR and/or associated issue #416, not mentioning you or I'm just impatient (forgive me for that). Issue #416 is created and I hope helps to understand and reproduce the issue. Is there anything I can help with to get this PR merged?
Thank you for all efforts on this great library.