TYPO3 Core

Sorting arrows in various lists are inconsitent or missing

• list module: direction is wrong, color is inconsistent and differs from new extJS grids.
• completely missing file list module

• Add new sprite, copied from typo3/sysext/t3skin/icons/gfx/arrow(up|down).png
• use sprite in list module and switch direction
• add in file list module

Comments
The patch created new sprites status-status-sort-asc' and 'status-status-sort-desc' because its more a status than an action.
The icons could be impromed because it still differes from grid version (white on dark gray) and has no contrast in file list module (t3-row-header) but cannot be white because its in the .c-headLine row in db list module. But its still better than nothing and should not be the old red arrow in my eyes.
The patch also fixes a typo and corrects one line in phpdoc

See also unanswered question in #11127