Merge branch 'master' into gitter-badge-1

Former-commit-id: 23f542f43b4b493e38f5aa4c29788ed93a63b43b [formerly 71b23a6a28eb045fcfeab6329de69f1e5455486b]
Former-commit-id: d12b3a6decc876f010a71f98e11df7387c1aaf2a

.github/CODEOWNERS

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+# Lines starting with '#' are comments.
+# Each line is a file pattern followed by one or more owners.
+
+accounts/usbwallet @karalabe
+consensus          @karalabe
+core/              @karalabe @holiman
+eth/               @karalabe
+mobile/            @karalabe
+p2p/               @fjl @zsfelfoldi

.github/CONTRIBUTING.md

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+## Can I have feature X
+
+Before you do a feature request please check and make sure that it isn't possible
+through some other means. The JavaScript enabled console is a powerful feature
+in the right hands. Please check our [Bitchin' tricks](https://github.com/ethereum/go-ethereum/wiki/bitchin-tricks) wiki page for more info
+and help.
+
+## Contributing
+
+If you'd like to contribute to go-ethereum please fork, fix, commit and
+send a pull request. Commits which do not comply with the coding standards
+are ignored (use gofmt!).
+
+See [Developers' Guide](https://github.com/ethereum/go-ethereum/wiki/Developers'-Guide)
+for more details on configuring your environment, testing, and
+dependency management.

.github/ISSUE_TEMPLATE.md

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+Hi there,
+
+please note that this is an issue tracker reserved for bug reports and feature requests.
+
+For general questions please use the gitter channel or the Ethereum stack exchange at https://ethereum.stackexchange.com.
+
+#### System information
+
+Geth version: `geth version`
+OS & Version: Windows/Linux/OSX
+Commit hash : (if `develop`)
+
+#### Expected behaviour
+
+
+#### Actual behaviour
+
+
+#### Steps to reproduce the behaviour
+
+
+#### Backtrace
+
+````
+[backtrace]
+````