* [#43684] migrated op-modal to spot-modal

- https://community.openproject.org/work_packages/43684


- amended styles
- removed "modal--title"
- removed header component
- removed closing icon
- fixed backdrop click
- removed jquery from modal service

* [#43684] removed unused styling

- fixed some inconsitencies
- readded removed icon
- removed listener on close button

* [#43684] combined spot-action-bar

- used spot-action-bar in combination with spot-modal--footer
- fixed some styling in action bar

* [#43684] replaced more op-modal

- moved spec selectors to spot-modal
- replaced found op-modal in html templates

* [#43684] add no margin to old buttons in new dialogs

- added mobile modal behavior
- fixed some feature spec selectors

* [#43684] added modal close on mobile resolutions

* [#43684] fixed PR issues

- removed old css classes from html
- fixed feature spec click
- readded tour trigger on modal cancel

* when clicking outside the modal it will be closed instaed of clicking on a close button

* exclude _center class from spot-modal sass file itself and add it to the component style sheet

* Words should be break in any case like when there is no space there

* remove unnecessary classes that never used like _fullscreen and _cente, remove _limited-height class to make all the modal look the same

Co-authored-by: bsatarnejad <b.satarnejad@gmail.com>
Co-authored-by: Benjamin Bädorf <b.baedorf@openproject.com>