Fixes minor issues with navigation view in main activity

[ashutoshgngwr]

Changes

• Fix navigation drawer width issue ("Rate us on the Play" - the word "Store" is cut off in the side drawer #135)
• Fix selected item color in navigation drawer

Testing

• Tested on a physical device
• Added or modified unit test cases

Others

• Fixes "Rate us on the Play" - the word "Store" is cut off in the side drawer #135
• Connects #0

[codecov]

Codecov Report

Merging #136 into master will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##             master     #136   +/-   ##
=========================================
  Coverage     78.51%   78.51%           
  Complexity      107      107           
=========================================
  Files            11       11           
  Lines           726      726           
  Branches         85       85           
=========================================
  Hits            570      570           
  Misses           88       88           
  Partials         68       68           

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