yasnippet: only fetch snippets submodule
yasnippet: remove :features and customize hacks

yasnippet now uses load-file-name to come up with a reasonable default
for yas-snippet-dirs.
byte-compile yasnippet.el

It's unclear why compilation was avoided initially[1], but it seems to work
now.

[1]: SVN problems? https://github.com/dimitri/el-get/issues/200
Create handlebars-mode.rcp
Add python-environment.rcp
Update jedi.rcp for Jedi.el v0.2.0
Remove features property as it's not needed
chess recipe
Fix Google Calendar build step
Load realgud and not its dependencies from realgud recipe

The realgud recipe is loading (:features) its dependencies instead of itself
even though it has no problems loading its dependencies.  It is currently not
very autoload friendly so load realgud from :features.
add elisp-assorted recipe + dummy recipe files
don't throw error when package menu lacks package

New packages could have become available since the menu was built.
Merge pull request #1602 from janders223/patch-1

Create handlebars-mode.rcp
Merge pull request #1604 from dholm/recipe/chess

chess recipe
Merge pull request #1605 from dholm/recipe/google-calendar

Fix Google Calendar build step
Merge pull request #1609 from secondplanet/elisp-assorted

Add elisp-assorted recipe + dummy recipe files
Merge pull request #1612 from npostavs/update-menu-noerr

don't throw error when package menu lacks package
Merge pull request #1606 from dholm/recipe/realgud

Load realgud and not its dependencies from realgud recipe
Flyspell 1.7q recipe
Merge pull request #1616 from dholm/recipe/flyspell

Flyspell 1.7q recipe