Add tests for GitHub controller

[devenbansod]

To be rebased and merged only after merging #168

Add tests for Github Controller

• Use php-mock/php-mock-phpunit for mocking php functions like curl_exec, curl_getinfo
• Remove unnecessary processing of pma version in create_issue form

Signed-off-by: Deven Bansod devenbansod.bits@gmail.com

[codecov[bot]]

Codecov Report

Merging #170 into master will increase coverage by 21.23%. The diff coverage is 93.75%.

@@              Coverage Diff              @@
##             master     #170       +/-   ##
=============================================
+ Coverage     47.09%   68.33%   +21.23%     
- Complexity      340      346        +6     
=============================================
  Files            27       27               
  Lines          1620     1563       -57     
=============================================
+ Hits            763     1068      +305     
+ Misses          857      495      -362

[nijel]

Merged, thanks for your contribution!