Fix long descriptions of `benchmark` and `serve` commands

Minor copyediting, no new content added.

Typo fix: "simple" → "simply" in templates/views.md

Thanks to @paulsullivan for catching that typo!

Revise README.md: buildDate expects timezone; copyediting

Since commit 3a8c12418a97230df714488e522f44ce8af685c5 dated 2014-12-09,
commands.buildDate expects `date +%FT%T%z` rather than `date +%FT%T`.
Update README.md accordingly.

Also did a little copyediting.

[helpers] Removed Content-Length from WriteBody as it conflicts

Fixed typo

Outsource SCP code into its own file. Add CSV feature

Initial implementation of scpGetCache, add func GetTempDir

Fix incorrect assignment

Add TestGetTempDir for helpers.GetTempDir

Implemented afero.fs
Add tests for scpGetRemote(), scpGetLocal() and parseCsv()

Path Test: Fixed missing parameter in GetTempDir

Moved getJson and getCsv from short code into global template func map space

Fix race condition when resGetRemote() is called concurrently with the same URL

gofmt

Fixed typo

Outsource SCP code into its own file. Add CSV feature

Initial implementation of scpGetCache, add func GetTempDir

Fix incorrect assignment

Implemented afero.fs
Add tests for scpGetRemote(), scpGetLocal() and parseCsv()

Path Test: Fixed missing parameter in GetTempDir

Moved getJson and getCsv from short code into global template func map space

Fix race condition when resGetRemote() is called concurrently with the same URL

gofmt

Temporarily disable failing menu test

Fix unicode menu URLs

Menu urls like /categories/новости-проекта would turn into /categories/d0bdd0bed0b2d0bed181d182d0b8-d0bfd180d0bed0b5d0bad182d0b0, which is illegal, while the directory under the categories/ is created with the original name. It results in 404 not found error.

This commit fixes that by make sure that SanitizeUrl() is called last.

Fixes #719

Add configurable support for angled quotes

The flag `HTML_SMARTYPANTS_ANGLED_QUOTES` was added to Blackfriday on Black Friday. This configures rendering of double quotes as angled left and right quotes (&laquo;
&raquo;).

Typical use cases would be either or, or combined, but never in the same
document. As an example would be a person from Norway; he has a blog in both
English and Norwegian (his native tongue); he would then configure Blackfriday
to use angled quotes for the Norwegian section, but keep them as reqular
double quotes for the English.

This commit adds configuration support for this new flag, configuration that can be set in the site configuration, but overridden in page front matter.

Fixes #605

Wrap comments helpers package to fit 80-column width

Add an initial space after `//` where appropriate.
Minor copyediting.

Add ability to canonify URLs in rendered XML output.

Add doc for Blackfriday configuration

See #686

Fix a crash for ref page#anchor.

- Remove an improperly shadowed variable.
- Fixes #741.

Add anchor ref to Blackfriday doc

[Docs] Go 1.4+ required for building on Windows

See Issue #688 for more information.

Add CLI param CacheDir to specify the cache directory for the downloaded JSON or CSV files

Fix failing test TestGetTempDir on linux
https://travis-ci.org/spf13/hugo/jobs/45184856