Support for loading recipes and roles from modules

Modules are located under `modules` folder. They will be copied on
deploy as well.

An example structure:

```
sample
├── files
├── install.sh
├── modules
│   └── another
│       ├── files
│       ├── install.sh
│       ├── README.md
│       ├── recipes
│       └── roles
│           └── web.sh
├── README.md
├── recipes
└── roles
```

Roles and recipes will be available for your project to access it with
the commited functions

docs/kickstart/module/apply_recipe.md

@@ -0,0 +1,11 @@
+# kickstart.module.apply_recipe module_name recipe_name
+
+Apply `recipe_name` from `module_name`.
+`module_name` is the name of the module under the `modules` folder.
+`recipe_name` is the name of the recipe under the `modules/module_name/recipes/recipe_name.sh`, without the .sh
+
+### Example
+
+```bash
+$ kickstart.module.apply_recipe kickstart-baseline gcc
+```

docs/kickstart/module/apply_role.md

@@ -0,0 +1,11 @@
+# kickstart.module.apply_role module_name role_name
+
+Apply `role_name` from `module_name`.
+`module_name` is the name of the module under the `modules` folder.
+`role_name` is the name of the role under the `modules/module_name/roles/role_name.sh`, without the .sh
+
+### Example
+
+```bash
+$ kickstart.module.apply_role kickstart-baseline haskell
+```

kickstart/recipes/kickstart/module.sh

@@ -0,0 +1,14 @@
+kickstart.module.apply_role() {
+  kickstart.module.apply_ $1 $2 roles
+}
+
+kickstart.module.apply_recipe() {
+  kickstart.module.apply_ $1 $2 recipes
+}
+
+kickstart.module.apply_() {
+  local cur_dir=`pwd`;
+  cd modules/$1
+  source $3/$2.sh
+  cd $cur_dir
+}