fix Picture's url method
Distribute the demo site with package's egg
Bump version in setup file
include package data directories: static and templates
Bump version number to 1.1a3
Split picture and pictureset templates. Add 2 new settings.

a) inline_media/inline_media_picture.html has been split into 3
templates:

  * inline_media/inline_media.picture.mini.html:
     Used only for inline_mini_* css classes.
  * inline_media/inline_media.picture.default.html:
     Used for inline_small_*, inline_medium_* and
     inline_large_* css classes.
  * inline_media/inline_media.picture.full.html:
     Used only for inline_full_* css classes.

  The same for picturesets.

b) Two new settings:

  1. INLINE_MEDIA_TEXTAREA_ATTRS, see settings.rst in the docs.
  2. INLINE_MEDIA_CUSTOM_SIZES, see settings.rst in the docs.
Merge branch 'feature/customsizes'
Add travis continuos integration
Little docs improvement
Adds django to requirements
Catch exception when testing within Travis-CI
Make use of customizable settings in demo site
Make inline_media settings be lazy, and fixes to some minor issues
Bump version number after previous commit
Fix example site default fixture: initial_data.json
Fix two bugs, change DB schemas, add test coverage.

Bug fixing:
 * Fixes bug on PictureSet 'order' field. Pictures were not ordered as
   expected. Now the are shown in the order specified in both, the inline
   and the slider.
 * Fixes bug when applying INLINE_MEDIA_TEXTAREA_ATTRS setting.
DB schema changes:
 * Picture Model gets new field 'show_description_inline' that allows
   user disable showing field 'description' in inlines, although still
   visible in prettyPhoto slider.
 * PictureSet Model gets two new fields: 'show_description_inline' and
   'show_counter'. The first has pretty much the same functionality as
   for the Picture model. While 'show_counter' allows the user disable
   showing the counter of pictures in the inline.
Test coverage:
 * For the two bugs fixed and for new model fields.
Todo:
 * Start to write a ChangeLog.
Fix bug when pictureset.order is empty
Strip HTML tags from picture.description when used in HTML 'title' attribute
Improvements all over the app

1. InlineType model no longer needed. A setting called
   INLINE_MEDIA_TYPES indicates what inline types have to be
   available in dropdown lists.
2. Customizable size classes on a per app.model basis through
   INLINE_MEDIA_CUSTOM_SIZES, now change the size classes
   available in the dropdown select element.
3. Button 'add' inserts the <inline> element in the cursor
   position in the textarea.
4. More unittests and less spanglish in the docs.
Adds south-migration that deletes InlineType model