changed dev-version to 3.5.4
handling uppercase extensions with browse, fixed #200
convert/normalize filename (including tests), fixed #205
placeholder with tests, fixed #201
updated translations
final updates for 3.5.4
changed development version to 3.5.5
Fixed file selection after using search box (CKEditor).

Added CKEditor params to the search form hidden inputs so they persist
after searching.
Merge pull request #212 from timgraham/ckeditor_search_params

Fixed file selection after using search box (CKEditor).
updated tests to work on Linux, fixed #213
Removed encoding of file URIs with CKEditor, fixed #210.

File URIs are already encoded in the template by
django.core.files.storage.FileSystemStorage.url(). Escaping
the URI in JavaScript resulted in double encoding of special
characters.
Merge pull request #215 from timgraham/ckeditor_encoding

Removed encoding of file URIs with CKEditor, fixed #210.
Merge pull request #214 from timgraham/fixed_tests

updated tests to work on Linux, fixed #213
update test image
Improved tests with convert/normalize (removed special chars from test filename), #213 #209
Delete TEST IMAGE ÄÄÄ.jpg
Added file extension validation to AJAX uploader, fixed #216.
Merge pull request #218 from timgraham/ajax_upload_extension_validation

Added file extension validation to AJAX uploader, fixed #216.
Added experimental support for Python 3.3.
Merge pull request #217 from timgraham/py3

Added experimental support for Python 3.3.