fix whitespace, check selected files before starting upload
change filelist ui updates
add triangle icon east
progress fixes
architecture too complex
reduced complexity, added listing conflicts to dialog
Merge branch 'master' into fix_3728_with_file_exists_dialog

Conflicts:
	apps/files/ajax/upload.php
	apps/files/js/file-upload.js
	apps/files/js/filelist.js
	apps/files/js/files.js
	apps/files/templates/part.list.php
refactor dialog creation
separate uploading code from progress code, add progress capability detection
Merge branch 'master' into fix_3728_with_file_exists_dialog

Conflicts:
	apps/files/js/file-upload.js
cleanup dead code
Merge branch 'master' into fix_3728_with_file_exists_dialog
completely remove dialog on cancel/continue
refactor replace and autorename resolution in upload.php
fix upload of multiple files
fix upload to folder
fix page leaving checks
fine ie8 compatability
show preview for uploading image files on conflict
close and destroy dialog on ESC