removed mwCapablities and implemented lazy pattern

[MananJethwani]

this resolves #1357

[codecov[bot]]

Codecov Report

Merging #1361 (ce69a0b) into master (6b3f019) will increase coverage by 0.15%. The diff coverage is 81.63%.

@@            Coverage Diff             @@
##           master    #1361      +/-   ##
==========================================
+ Coverage   67.82%   67.97%   +0.15%     
==========================================
  Files          26       26              
  Lines        2340     2370      +30     
  Branches      455      457       +2     
==========================================
+ Hits         1587     1611      +24     
- Misses        593      596       +3     
- Partials      160      163       +3     

Impacted Files	Coverage Δ
src/util/misc.ts	78.86% <ø> (ø)
src/Downloader.ts	65.89% <56.25%> (-1.22%)	:arrow_down:
src/util/mw-api.ts	88.63% <83.33%> (-0.39%)	:arrow_down:
src/MediaWiki.ts	74.54% <96.00%> (+3.41%)	:arrow_up:
src/util/articleRenderers.ts	74.19% <100.00%> (ø)

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[stale[bot]]

This pull request has been automatically marked as stale because it has not had recent activity. It will be now be reviewed manually. Thank you for your contributions.