custom_breadcrumbs 6.x-2.0-beta2

Changes since 6.x-2.0-beta1

* by MGN: restoring some code that was inadvertently removed for the beta1 release.
#595066: Conflict with the admin_menu module by MGN: New feature to select menus to be used to provide custom breadcrumbs based on menu structure.
* by MGN: New feature to prevent custom breadrumbs from modifying the breadcrumbs for some pages by path.
* by MGN: Code and UI cleanup.
* by MGN: Allow strings used for page titles to be translated.
#594394: PHP Parse error: syntax error, unexpected $end in modules/custom_breadcrumbs/custom_breadcrumbs by MGN: Require php code tags when using php for titles and paths.
#540766: Breadcrumbs specific to forum wrapper pages (by template?) by MGN: New feature to provide custom breadcrumbs according to theme template.
#609650: Pathauto Special Identifier Not Converting Paths to Lowercase by MGN: Trim any whitespace between identifier and path.
#616976: Show current taxonomy term in breadcrumb trail by MGN: Correctly identify taxonomy term page for taxonomy type breadcrumbs.
#623274: Use taxonomy breadcrumbs for views + multiple arguments by guix: Fix processing of multiple views arguments.
#644512: Changing module weights can break CB settings form. by MGN: Changing module weights can break CB settings form.
* by MGN: Code, comment, and translatable strings cleanup.
* by MGN: Updating README.txt
* by MGN: Remove php tags in titles and paths if user doesn't have appropriate permission to use php.