Add quality and other metadata when matching

[geoah]

Simple matcher should be able to figure out more than just show, season, and episode.

Useful metadata would include:

• Quality
• Group name
• CRC32
• Proper/Repack

[jimeh]

Quality is actually pretty complex and breaks down into four categories:

• Resolutions (1080p, 1080i, 720p, etc...)
• Sources (bluray, dvdrip, webdl, webrip, hdtv, etc...)
• Codec (h246, divx, etc...)
• Audio (aac, flac, ac3, etc...)

Again, Flexget is paves the way when it comes to how to handle Quality and what different qualities we probably want to support: http://flexget.com/Plugins/quality

[geoah]

After #31 we have a much better place and structure to store episode metadata but we still might need to add or remove some attributes.

type UserFile struct {
    Name         string `json:"name" gorethink:"name"`
    Path         string `json:"path" gorethink:"path"`
    Infohash     string `json:"-" gorethink:"infohash"`
    Resolution   string `json:"resolution" gorethink:"resolution"`
    Source       string `json:"source" gorethink:"source"`
    VideoCodec   string `json:"video_codec" gorethink:"video_codec"`
    AudioCodec   string `json:"audio_codec" gorethink:"audio_codec"`
    ReleaseGroup string `json:"release_group" gorethink:"release_group"`
    CRC32        string `json:"crc32" gorethink:"crc32"`
    Status       string `json:"status" gorethink:"status"`
    RetryTime    int64  `json:"retry_time" gorethink:"retry_time"`
}