Clean up/normalise whitespace in Sass, CSS

Signed-off-by: Alex Coles <alex@alexbcoles.com>
Restore positioning of legacy action menu
Make action menu selectors in integration tests work again
Fix tests after applying legacy styles to action menu
Using angular-truncate plugin to truncate query names.
Fix firefox compatibility of with-dropdown directive ...


TODO Refactor the directive architecture
ascending/descending locales.
Make the context menu drop down toggleable
Improve tasks drop down positioning
Merge pull request #1342 from opf/bugfix/dropdown-behaviour-in-ff

Bugfix/dropdown behaviour in ff
Merge pull request #1340 from opf/fix/8237-sortation-locales

ascending/descending locales.
Merge pull request #1333 from opf/bugfix/restore-legacy-actions-positioning

Restore positioning of legacy action menu
Merge pull request #1336 from opf/fix/7832-query-name-truncation

Using angular-truncate plugin to truncate query names.
Merge pull request #1327 from opf/fix/stylesheet-style-fixes

Stylesheet style fixes
Make wp headline responsive to themes
Merge branch 'dev-angular' of github.com:opf/openproject into dev-angular
Merge pull request #1344 from opf/dev-angular

Dev angular
Fix karma
Remove unheeded warning comment in web_steps.rb

[ci skip]

Signed-off-by: Alex Coles <alex@alexbcoles.com>
Restrict columns in group by dialog to groupable columns