Introduces table for attachment list
Introduces asynchronous delete for attachments
Moves attachment destroy tests to specs
Fixes wiki page attachment destroy
Adds cuke for bug
Adds changelog entry

[skip ci]
Uses let! instead of before
Refactores function implementation
Merge remote-tracking branch 'origin/feature/rails3' into bug/attachment_delete_closes_work_package_edit

Conflicts:
	doc/CHANGELOG.md
Point out consistent usage of wiki_id throughout data loading in wiki_menu_items_controller
Ensure consistent referencing of wiki in wiki menu items controller spec setup
Merge pull request #521 from opf/bugfix/1935_failing_specs
quick fix for failing cukes with impermanent memberships
Merge remote-tracking branch 'origin/feature/rails3' into bug/attachment_delete_closes_work_package_edit

Conflicts:
	doc/CHANGELOG.md
Merge remote-tracking branch 'origin/feature/rails3' into bug/attachment_delete_closes_work_package_edit

Conflicts:
	doc/CHANGELOG.md
Merge pull request #508 from opf/bug/attachment_delete_closes_work_package_edit

[BUG] Attachment delete closes work package edit
remove tinymce spike
add changelog entry

[ci skip]
Merge pull request #525 from opf/feature/rails3_remove_wysiwyg_spike

remove tinymce spike
Merge branch 'feature/rails3' into feature/ie10-fixes

Conflicts:
	doc/CHANGELOG.md