Added "issue:copy" command
[issue copy] minor corrections
feature #356 Added "issue:copy" command (cordoval)

This PR was merged into the master branch.

Discussion
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|Q            |A  |
|---          |---|
|Fixed Tickets|   |
|License      |MIT|

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Commits
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5f3dc757bf88320797a9b21994123be3a0039352 Added "issue:copy" command (dantleech)
5f52beedac2a4ef3d12d242c0ae5e3839d9b73a3 [issue copy] minor corrections (cordoval)
allow IssueTakeCommand to choose git remote

Org is also used for configuring the adapter
so unless a remote with the same name as org exists you can't
use this command
Merge pull request #357 from sstok/hotfix-issue-take

hotfix for IssueTakeCommand
change gush git-remote configuration handling

- each remote (except origin) corresponds the org
- provide a way to get the fork-origin to better guess correct org
- move git configuration handling to its own helper
update PullRequestMergeCommand for new GitConfigHelper
add missing file StringUtil.php
fix broken tests
fix phpdoc-typo