add website app, move articles to it, fix programs.models

programs/README.md

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+This application defines all base classes for the aircox platform. This includes:
+* **Metadata**:         generic class that contains metadata
+* **Publication**:      generic class for models that can be publicated
+* **Track**:            informations on a track in a playlist
+* **SoundFile**:        informations on a sound (podcast)
+* **Schedule**:         schedule informations for programs
+* **Article**:          simple article
+* **Program**:          radio program
+* **Episode**:          occurence of a radio program
+* **Event**:            log info on what has been or what should be played
+
+
+# Program
+Each program has a directory in **AIRCOX_PROGRAMS_DATA**; For each, subdir:
+* **public**:   public sound files and data (accessible from the website)
+* **private**:  private sound files and data
+* **podcasts**: podcasts that can be upload to external plateforms
+
+
+# Event
+Event have a double purpose:
+- log played sounds
+- plannify diffusions
+
+
+# manage.py schedule
+Return the next songs to be played and the schedule and the programmed emissions
+
+# manage.py monitor
+The manage.py has a command **monitor** that:
+* check for new sound files
+* stat the sound files
+* match sound files against episodes and eventually program them
+* upload public podcasts to mixcloud if required
+
+The command will try to match file name against a planified episode by detecting
+a date (ISO 8601 date notation YYYY-MM-DD or YYYYMMDD) as name prefix
+
+Tags set:
+* **incorrect**:    the sound is not correct for diffusion (TODO: parameters)
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