improved issue reporting guidelines

Include groups in import with import repos rake task

remove branch dependencies in README where not necessary

clarify when issue tracker is to be used so as to not contradict issue t...

add stack overflow to help page

details on looking for correct installation guide

added stack overflow as support option

clarify when issue tracker is to be used so as to not contradict issue tracker guidelines and maintenance policy

no need to download init and nginx files since they are in repo now

Fixed typo in CHANGELOG.md

styling and typo fixes in installation guide

addresses gitlabhq/gitlabhq#3809

Expand the import glob to include `**/*.git` to find projects in groups
as well as top level projects.  Check for existing group, and create
group if needed.  Set namespace_id for imported projects.

Hipchat service implementation

improve regrex for match(sidekiq) robustness

Fixed typo in Readme.md