add jquery-atwho-rails gem
include jquery-atwho to applications.js/css
add issue number autocomplete for textareas
fix syntax error in journals notes_form
don't die if there is not data-wp_autocomplete_url and also search words in wp subjects
adapt autocomplete styling to openproject theme
let the at.js textarea autocompletion look like the usual work-package auto-completion
do not sort auto-completion results, they are already sorted
Merge remote-tracking branch 'origin/dev' into feature/issue_autocomplete
add changelog entry
Merge branch 'dev' into feature/issue_autocomplete

Conflicts:
	doc/CHANGELOG.md
Merge remote-tracking branch 'origin/dev' into feature/issue_autocomplete
let all textarea which appear with ajax requests in the wp edit view enjoy the auto completion
Merge branch 'feature/issue_autocomplete' of github.com:opf/openproject into feature/issue_autocomplete
Merge branch 'dev' into feature/issue_autocomplete

Conflicts:
	doc/CHANGELOG.md
Merge pull request #739 from opf/feature/issue_autocomplete