Fixed: Wrong label in issue-journal for subtask-changes (#5090).
Upgrade CodeRay to 0.9.2 (#3359).
Refactor: Split the find_object methods to prep for a larger refactoring.
Close unclosed pre/code tags (#4265).
Do not parse redmine links inside pre/code tags (#1288).
Extract parsing of inline attachments, wiki links and redmine links.
Fixed closing tags in syntax highlighting tests.
Add background color to line numbers of highlighted code.
Replace the hardcoded "CodeRay" css class name for highlighted elements.
Extract CodeRay calls to Redmine::SyntaxHighlighting (#2985).
