Codebase is not compliant with lint

[eliwu64]

The codebase fails the Gradle lint check with 4 errors and 393 warnings that have accumulated over time, some of which are release-blocking. We need to fix these errors and, in the future, mandate that all changes pass lint before they can be submitted.

https://developer.android.com/studio/write/lint

Errors:

Task :app:lintVitalRelease
/bitrise/src/app/src/main/res/layout/fragment_calendar.xml:13: Error: @+id/toolbar is not a sibling in the same RelativeLayout [NotSibling]
android:layout_below="@+id/toolbar"

Task :app:lint
Correctness
--
1 | warning NestedScrolling: Nested scrolling widgets
1 | warning CommitPrefEdits: Missing commit() on SharedPreference editor
10 | warning DefaultLocale: Implied default locale in case conversion
2 | error InvalidPackage: Package not included in Android
3 | warning SimpleDateFormat: Implied locale in date format
1 | warning UnusedAttribute: Attribute unused on older versions
1 | error ProtectedPermissions: Using system app permission
13 | warning GradleDependency: Obsolete Gradle Dependency
1 | error RestrictedApi: Restricted API
11 | warning SpUsage: Using dp instead of sp for text sizes
  | Security
1 | warning UnsafeProtectedBroadcastReceiver: Unsafe Protected BroadcastReceiver
2 | warning ExportedService: Exported service does not require permission
1 | warning AllowBackup: AllowBackup/FullBackupContent Problems
  | Performance
18 | warning ObsoleteLayoutParam: Obsolete layout params
7 | warning ObsoleteSdkInt: Obsolete SDK_INT Version Check
10 | warning StaticFieldLeak: Static Field Leaks
9 | warning UseCompoundDrawables: Node can be replaced by a TextView with compound drawables
1 | warning ViewHolder: View Holder Candidates
1 | warning UseOfBundledGooglePlayServices: Use of bundled version of Google Play services
1 | warning InefficientWeight: Inefficient layout weight
6 | warning Overdraw: Overdraw: Painting regions more than once
42 | warning UnusedResources: Unused resources
7 | warning UselessParent: Useless parent layout
18 | warning RedundantNamespace: Redundant namespace
14 | warning UnusedNamespace: Unused namespace
  | Usability:Icons
1 | warning IconNoDpi: Icon appears in both -nodpi and dpi folders
10 | warning IconDipSize: Icon density-independent size validation
12 | warning IconDuplicatesConfig: Identical bitmaps across various configurations
37 | warning IconLocation: Image defined in density-independent drawable folder
4 | warning IconDensities: Icon densities validation
  | Usability
7 | warning ButtonStyle: Button should be borderless
1 | warning GoogleAppIndexingWarning: Missing support for Firebase App Indexing
  | Accessibility
2 | warning ClickableViewAccessibility: Accessibility in Custom Views
20 | warning ContentDescription: Image without contentDescription
10 | warning KeyboardInaccessibleWidget: Keyboard inaccessible widget
  | Internationalization
3 | warning SetTextI18n: TextView Internationalization
42 | warning HardcodedText: Hardcoded text
  | Internationalization:Bidirectional Text
4 | warning RtlSymmetry: Padding and margin symmetry
61 | warning RtlHardcoded: Using left/right instead of start/end attributes
1 | warning RtlEnabled: Using RTL attributes without enabling RTL support