(Bug 1032643) Tweak bug suggestions retrieval
fix delete_bugscache method in RefDataManager
fixup! fix delete_bugscache method in RefDataManager
retrieve bug suggestions with an all words search
Update the readme to make it more comprehensive (1046639)
fix bug suggestions for crash and leak lines
Merge pull request #187 from mozilla/bug-1032643-tweak-bug-suggestions

Bug 1032643 tweak bug suggestions
Merge pull request #186 from tojonmz/update-readmes

Update the readme to make it more comprehensive (1046639)
Add caching to endpoints that don't change much
use ``cacheResponseAndETAG`` instead of just cache