This continues a pattern that was introduced in ffa45b0 and refined
further in later commits. This enables all aliases by default, but can
be disabled by any user if they remove the appropriate
aliases/enabled/*.bash file.
This allows users to disable a plugin without completely removing it.
Instead, they simply remove the `plugins/enabled/*.bash` file for the
plugin they want to disable. This continues the concept of "everything
on" while providing greater flexibility to future users.
It might be a good idea to allow turning these off by default in the
future and allowing not only the `plugins/enabled/*.bash` files but also
an array of `<plugin_name>` values that would search for
`plugins/available/<plugin_name>.plugin.bash` to enable them. That
method would make it easier for people custom tune their plugins from
within their `.bash_profile` script.
* Only load a theme file if `bobby` has been set
* Only alter `PS1` if `\[[1;34m\]\[$(scm_char)\]\[[0;32m\]\[$(scm_prompt_info)\]\[[0;34m\]\[$(rvm_version_prompt)\] \[[33;40m\]\h \[[39m\]in \[[0;32m\]\w \[[39m\]\[\n\[[0;32m\]→\[[39m\] ` has a value