[Issue #187][WIP] resolved some indentation in model synonym for readability
[Issue #187][WIP] done with backend and documentation
[Issue #187][WIP] solved a bug in the backend method retrieve_synonyms
[Issue #187][WIP] sorted the retrieved list of synonyms acc. to the highest vote count
[Issue #187][WIP] modified method retrieve synonyms
[Issue #195][WIP] updated yml translation files
[Issue #187][WIP] updated search action method to view synonyms for keyword being searched
[Issue #187][WIP] modified view to display synonyms for the word searched
Resolved merge confilcts

Files added:
- ar.yml
- en.yml
- search controller
- search view
Story C4.S02: Synonym Retrieval

Merge branch 'C4_NourhanMohamed_S02_retrieve_synonyms' into rolling_master

Conflicts:
	arability/app/models/synonym.rb
	arability/config/locales/ar.yml
	arability/config/locales/en.yml
Merge branch 'rolling_master' of https://github.com/MGhanem/smartsoft-13 into rolling_master