chore: Removed obsolete configurations and updated versions of dependencies.

[yashk2000]

Fixed #2763

Changes: Changes compile to implementation, debugCompile to debugImplementation and other related changes. Also, updated versions of dependencies used.

[mariobehling]

Travis is failing. Please fix.

[yashk2000]

Yes sir. I am working on fixing it.

[yashk2000]

@iamareebjamal @abishekvashok I am not able to resolve this error:

Dependencies using groupId com.android.support and androidx.* can not be combined but found IdeMavenCoordinates{myGroupId='com.android.support', myArtifactId='recyclerview-v7', myVersion='28.0.0', myPacking='aar', myClassifier='null'} and IdeMavenCoordinates{myGroupId='androidx.drawerlayout', myArtifactId='drawerlayout', myVersion='1.0.0', myPacking='aar', myClassifier='null'} incompatible dependencies less... (Ctrl+F1) Inspection info:There are some combinations of libraries, or tools and libraries, that are incompatible, or can lead to bugs. One such incompatibility is compiling with a version of the Android support libraries that is not the latest version (or in particular, a version lower than your targetSdkVersion).

Issue id: GradleCompatible

Could you please help with this? As far as I know, we are not using android.x in the app yet.

[iamareebjamal]

You are using androidx somewhere in some transitive dependency

[yashk2000]

@iamareebjamal how do I find the dependency in which androidx has been used?

[iamareebjamal]

./gradlew app:dependencies

[yashk2000]

@iamareebjamal did that. I was still unable to find androidx anywhere.

[iamareebjamal]

That's impossible.

[yashk2000]

@iamareebjamal apologies. I found out that androidx is being used. I went through all the dependencies manually this time. Earlier I was using the search feature of the terminal itself, which may be cause me to skip androidx.

[yashk2000]

@iamareebjamal how do I fix this: error: package android.test does not exist

ApplicationTestCase was deprecated in API Level 24.

[iamareebjamal]

Update the tests

[yashk2000]

@iamareebjamal how do I replace the ApplicationTestCase?

[yashk2000]

@iamareebjamal @mariobehling @abishekvashok @adityastic please review.