Adding FormatUser method

[NilsLindenberg]

This method renders usernames as links only when needed (when the corresponding userpage exists), avoiding the creation of dozens missing page links for users without userpage. It also makes other options configurable like truncating long hostnames or disabling link formatting.

Ref

 http://wikkawiki.org/FormatUserMethod

[BrianKoontz]

Implemented in support of #418 (nested comments).

[DarTar]

reopening ticket to implement it also in other routines involving users

[DarTar]

(In [486]) reverting [482] that inadvertently replaced tabs with spaces (Brian make sure you check your editor settings), refs #418 and #221

[DarTar]

(In [487]) Reimplementing FormatUser() as per [482] (see [486]), refs #418 and #221

[DarTar]

(In [495]) Adding link tail for Author profiles and starting applying FormatUser() method, refs #221 and #35

[DarTar]

(In [496]) Actually formatting the UserName from the UserSettings is a bad idea (the userpage is no more displayed as missing!), reverting part of the previous change, refs #221 and #35

[DarTar]

Brian, more precisely, this should be applied in any action/handler in which we make a reference to a user (including RecentChanges, RecentComments, revisions etc.). I'm planning to add another class for anonymous users.

[DarTar]

(In [499]) Applying FormatUser() to RecentlyCommented, added phpdoc links, refs #221

[DarTar]

(In [500]) Applying FormatUser() to RecentComments, refs #221

[DarTar]

(In [503]) Applying FormatUser() to PageIndex, refs #221

[DarTar]

(In [504]) Applying FormatUser() to lastedit, refs #221

[DarTar]

(In [509]) Applying FormatUser() to revisions handler, refs #221

[DarTar]

(In [511]) Applying FormatUser() to history + slightly improved styling for revisions and history, refs #380 and #221

[DarTar]

Retargeting to 1.3. Code for this ticket may have already been committed to trunk, from which 1.3 will be branched. Consider backporting urgent issues to 1.2.X