Code quality updates

What's Changed

• Update for scrutinizer issues. pt. 1 by @Firesphere in #65

Full Changelog: 1.0.1...1.1.0

Also tag the backend

1.0.1

Forgot to tag the backend

First version release

What's Changed

• Add first set of traits to keep the codebase in sync by @Firesphere in #1
• Hans/basequery by @Firesphere in #2
• I can do basic queries with this by @Firesphere in #3
• Hans/searchresult object by @Firesphere in #4
• Add results out of a search by @Firesphere in #5
• Enable filtering by field by @Firesphere in #27
• Add pagination from inside Elastic by @Firesphere in #33
• Add synonym support and CUD by @Firesphere in #34
• Hans/finetuning by @Firesphere in #35
• Start adding unittests by @Firesphere in #41
• Update scrutinizer tests by @Firesphere in #42
• Add boosting at query time by @Firesphere in #43
• Hans/simplified querybuild by @Firesphere in #45
• Add spellchecking by @Firesphere in #47
• Hans/i zpell gud by @Firesphere in #49
• Delete object from index when unticked 'ShowInSearch' by @Firesphere in #50
• Hans/add more tests by @Firesphere in #53
• Extract code duplication, add term test by @Firesphere in #54
• Add faceting from Elastic by @Firesphere in #56
• Add some standard tests and faceted responses by @Firesphere in #57
• Add creation and clearing of indices by @Firesphere in #58
• Test the service, minor abstractions, fix date by @Firesphere in #59
• Add sort-abilitiy by @Firesphere in #61
• Add fur by @Firesphere in #62
• Improve delete create index by @Firesphere in #63

Full Changelog: https://github.com/Firesphere/silverstripe-elastic/commits/1.0.0