Add install and upgrade information for CentOS/RHEL and Ubuntu
Merge pull request #2166 from opf/hotfix/update_docs_supported_distros

Add install and upgrade information for CentOS/RHEL and Ubuntu
Make the installation prerequisites more consistent with regard to CentOS/RHEL, Fedora and Ubuntu
formatting of bullets
rewriting i18n tests as specs
one class variable less
Merge pull request #2165 from opf/hotfix/i18n_testing_as_specs
Fix the URL for the stable branch of Fedora 20 packager
Merge pull request #2172 from lindenthal/release/4.0

Fix the URL for the stable branch of Fedora 20 packager
Correct API experimental's users path
Merge pull request #2177 from opf/hotfix/17173_user_related_wp_filters_are_inactive

17173 User related WP filters are inactive
Add jshint-stylish, configure as JSHint reporter

Signed-off-by: Alex Coles <alex@alexbcoles.com>
Consider width limitation in wiki
Make WP new path method more generic
Fix WP new path
Make inplace editor buttons accessible
Adapt tests to accessible inplace editor buttons
Merge pull request #2186 from opf/fix/17258_edit_subject_not_accessible_with_chromevox

17258 Inplace editor buttons not accessible with ChromeVox
Merge pull request #2176 from opf/hotfix/16959_timelines_macro_does_not_have_sufficient_width

16959 timelines macro does not have sufficient width
Merge branch 'release/4.0' into dev

Conflicts:
	app/assets/javascripts/angular/timelines/directives/timeline-container-directive.js
	lib/redmine/i18n.rb
	spec/lib/redmine/i18n_spec.rb