[AC-441] Convert Hardcoded Strings to String Resources

[ribhavsharma]

Description of what I changed

Converted all hardcoded strings to String Resources, so that the app can have support for multiple languages in the future.

Task that I worked on

GCI Task: Android Client: Convert Hardcoded Strings to String Resources

Issue that I worked on

AC-441

Checklist: I completed these to help reviewers :)

• My pull request only contains ONE single commit
  (the number above, next to the 'Commits' tab is 1).

• I have added tests to cover my changes. (If you refactored
  existing code that was well tested you do not have to add tests)

• All new and existing tests passed.

• My pull request is based on the latest changes of the master branch.

[codecov-io]

Codecov Report

Merging #627 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #627   +/-   ##
=======================================
  Coverage   14.29%   14.29%           
=======================================
  Files         202      202           
  Lines        9220     9220           
  Branches      791      791           
=======================================
  Hits         1318     1318           
  Misses       7821     7821           
  Partials       81       81

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[prathamesh-mutkure]

Hii @ribhavsharma

I have reviewed your code, looks good but can you please work on suggested changes? I've added comments on the same.

I'm not a mentor so wait for them to review it and have their say!

[vansha10]

@ribhavsharma Please follow the Pull Request Guidelines.
You need to include the JIRA ticket number in the Pull Request Name, and also have a link to it in the description.
Also, please squash your commits into a single commit.

[ribhavsharma]

@ribhavsharma Please follow the Pull Request Guidelines.
You need to include the JIRA ticket number in the Pull Request Name, and also have a link to it in the description.
Also, please squash your commits into a single commit.

@vansha10 Kindly check out the PR now.

[vansha10]

Good work @ribhavsharma.
Just one more thing, you need to include the JIRA ticket number in the Pull Request Title. Please replace
[GCI '19] with AC 441.

[vansha10]

Looks good @ribhavsharma.
@f4ww4z Can you have a look at this?

[f4ww4z]

Looks @ribhavsharma ! Sorry for the delay.