Fixes the error on app exiting on via the device back button

See merge request bloodyhealth/drip!291

Merge branch '306-chart-displays-sex-dot-even-if-only-contraceptive-options-are-saved' into 'master'

Chart doesn't display sex dot although contraception method 'other' has been already removed

Closes #306

See merge request bloodyhealth/drip!285

Update README.md with F-Droid and Google Play Badges

See merge request bloodyhealth/drip!289

Chart navigation bug fix.

See merge request bloodyhealth/drip!287

Change clear to lowercase to make it case sensitive and executable

See merge request bloodyhealth/drip!286

Resolve "don't show temperature chart part of chart when temp not tracked"

Closes #183

See merge request bloodyhealth/drip!257

Bring in different shades for desire dots on chart

Closes #414

See merge request bloodyhealth/drip!265

Splits the rest of the tests without modifying them

See merge request bloodyhealth/drip!274

Moves out the test for getCyclesBefore method of cycle module

See merge request bloodyhealth/drip!273

Moves out the test for getPReviousCycle method of cycle module

See merge request bloodyhealth/drip!272

Lint rule react prop types addition

See merge request bloodyhealth/drip!270

Adds test and fixes getCycleByStartDate method of cycle module

See merge request bloodyhealth/drip!269

Cleans up the eslint rules

See merge request bloodyhealth/drip!271

Moves out the tests for getCycleDayNumber and organises them

See merge request bloodyhealth/drip!268

Symptom views clean up

See merge request bloodyhealth/drip!267

Home split

See merge request bloodyhealth/drip!266