Update failing test.

Don't check that PlantAndGardenPlantings.plant is null when
build with the default constructor because it should always
be set by Room to a valid plant (since it represents a plant
in a garden).

The fact that it is non-null (and points to the correct plant)
is tested in GardenPlantingDaoTest.testGetPlantAndGardenPlantings.

Bump versionName to 0.1.6

Bump versionName to 0.1.5

Bump versionName to 0.1.4

Bump versionName to 0.1.3

Merge pull request android#42 from tiembo/canary18

Update gradleVersion and versionName

[Sunflower] Bump versionName to 0.1.1

Change-Id: I13cb83e9b38499454d283c57ed1c1a9e55efddb3

[Sunflower] Downsize screenshots from 1080x1920 to 270x480 (25%)

Test: N/A
Change-Id: I81927c565bd32dd7351a3944cc606d985da45bae