refactor(data): rename NgRxDataModule to EntityDataModule

[jtcrowson]

PR Checklist

Please check if your PR fulfills the following requirements:

• The commit message follows our guidelines: https://github.com/ngrx/platform/blob/master/CONTRIBUTING.md#commit
• Tests for the changes have been added (for bug fixes / features)
• Documentation has been added / updated (for bug fixes / features)

PR Type

What kind of change does this PR introduce?

[ ] Bugfix
[ ] Feature
[ ] Code style update (formatting, local variables)
[x] Refactoring (no functional changes, no api changes)
[ ] Build related changes
[ ] CI related changes
[ ] Documentation content changes
[ ] Other... Please describe:

What is the current behavior?

Closes #1777

What is the new behavior?

To stay consistent across modules, the following was renamed:

NgrxDataModule -> EntityDataModule
NgrxDataModuleWithoutEffects -> EntityDataModuleWithoutEffects
NgrxDataModuleConfig -> EntityDataModuleConfig

Does this PR introduce a breaking change?

[x] Yes
[ ] No

Other information

[ngrxbot]

Preview docs changes for cce25fb at https://previews.ngrx.io/pr1780-cce25fb/

[timdeschryver]

Could you also rename ngrx-data.module.spec please?

[jtcrowson]

@timdeschryver renamed in b03eb87.

[brandonroberts]

#1767 is merged now, so you'll need to rebase on master and update the overview page also.

[ngrxbot]

Preview docs changes for b03eb87 at https://previews.ngrx.io/pr1780-b03eb87/

[jtcrowson]

@brandonroberts rebased. Updated data overview page to reflect code renaming in 7500dc0. Should I update the term "NgRx Data" to "Entity Data" on the overview page as well?

[brandonroberts]

We still want to refer to it as NgRx Data, with EntityData for usage

[ngrxbot]

Preview docs changes for 7500dc0 at https://previews.ngrx.io/pr1780-7500dc0/

[timdeschryver]

LGTM 👍