Develop new function to show the content of problem#127

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qyazhang wants to merge 8 commits intoLeetCode-OpenSource:masterfrom

qyazhang:develop

Commits on Feb 13, 2019

add "show problem" function to right-click menu (original "show problem" is changed to "show to solve problem"
zhang
committed

Commits on Feb 15, 2019

Commits on Feb 17, 2019