Get rid of rb-appscript

Deprecated, does not work with OS X’ 10.8.5’s stock Ruby install. Use
`osascript` calls instead.
Bundling belongs belongs into VCS

… and the other stuff belongs into the global `.gitignore`.
Clean up gem bundle setup
Ruby 1.8 compatibility

For OS X systems < 10.9 wehre Ruby 1.8.7 is standard.
More robust iTunes querying

Return nil if iTunes has no currently playing song.
More robust array argument handling

Use `Array()` casts for higher type safety.
More robust data handling

Handle missing data fields in returned information gracefully.
Do not query last.fm unless valid parameters are given
Streamline local gem bundle loading

Ruby version specific, automated inclusion in `$LOAD_PATH` without
manual editing.
Basic localization

Localize numeric output to user locale, set foundation for translations.
Remove unneeded gem

`alfred-workflow` properly declares its runtime dependencies, we don’t
need to pull them in manually.
Group monkey patches
Reduce initialization boilerplate

Moved user data loading and Alfred path retrieval into AlfredfmHelper
constructor; we call them every time we instantiate anyway.
Removed homegrown formatting code

LocalizationHelper takes care fo formatting now.
Removed unused function
Removed pointless array casting function

`Array(array).join(', ')` does this ouf the standard library’s box.
Fixed timestamp retrieval

We don’t have multiple timestamps, we have multiple dates in one
timestamp record.
Use alfred-workflow custom matchers

Allows for use of the inbuilt matching abilities of the gem instead of
rolling our own.
Use alfred-workflow input filtering

…wherever it makes sense for the user to narrow down serach results.
Load all helpers in lib