Put `local var` declaration in its own line in lib/git.zsh

In places, the local statement will override the exit code and the written
command won't have the effect intended when it was written.

For example, when it's not inside a git repo the exit code won't be true,
but the local statement will make it true regardless. See #4708.

Add hub's completion file

Fixed a typo.

colored-man-pages: Use Portable `less` Path

Update gulp.plugin.zsh

Remove `local` stuff that cause an error in shell

This uses the version at commit 35c76bf (2015-12-08)
https://github.com/github/hub/commit/35c76bf91dc3d699173599464b9b41cb877ee440

Commit 09d2a597 introduced the bug, which is due to using
single brackets conditions at the same time as *.

This commit should fix it and use double brackets everywhere
else.

Fixes #4699

Fetch Gulp tasks list in a better way

Add local stuff

Sort pipe dropped and fix 2>/dev/null

znt: more optimizing workarounds for 5.0.6 <= zsh < 5.2

Close #4469

Some environments (in my case, cygwin) have PATH variables with directories
with spaces in them, breaking colored-man.
Adding quotes around the PATH environment variable makes the plugin run OK.

Close #4103

When the user is asked to update oh-my-zsh it says "[Oh My Zsh] Would
you like to check for updates? [Y/n]:". When the user agreed to update
the next text would say "Upgrading Oh My Zsh" which is inconsistent
with the question.

Nicer formatting of ember aliases in README

Update frontcube.zsh-theme

Git: move current_branch() to core

Fixes #4085: core -> plugin dependency issue.
Rename it to git_current_branch for clarity that it's git-specific.
Update all plugins that were calling it to use new name.
Fix variable leaks by making more variables in lib/git.zsh local.
Have lib/git.zsh use [[ ]] instead of [ ] everywhere.

Add 'rake stats' alias.

agnoster theme: stronger warning about changing SEGMENT_SEPARATOR character

Add branch plugin

archlinux: use $+commands instead of 'command -v' in a subshell

Default to using terminfo to set the terminal title

"fishy" theme: Shorten path .foo to .f, not .

Actually replace the value of the environment variable $HOME with
"~" instead of appending the tilde in front of the prompt.

Currently, the title is only set on supported terminals (i.e. xterm,
urxvt, screen etc.). Using terminfo entries to set the terminal title
adds support for many more terminals.

[Composer] redirect stderr to /dev/null for completion commands

Update link to git completion