Resolve "Mobile: Alignment of logo"

Closes #508

See merge request t3o/t3olayout!403

Resolve "Gulp watcher does not work"

Closes #515

See merge request t3o/t3olayout!411

Resolve "Mobile view of events could be improved"

Closes #516

See merge request t3o/t3olayout!412

- fix overlapping arrow/title overlapping
- expand date, title and content over 100% on mobile view

Closes #516

Resolves #515

Resolve "IE/Desktop: Remove gap between slider and header"

Closes #500

See merge request t3o/t3olayout!399

Resolve "BUGs: Subnavigation"

Closes #499

See merge request t3o/t3olayout!406

Merge branch '499-bugs-subnavigation' of https://git-t3o.typo3.org/t3o/t3olayout into 470-create-a-subnavigation

[!!!] Update gulp to ^4.0.0 and fix security issues in node modules

See merge request t3o/t3olayout!400

Breaking: It can be that you need to remove the node_modules folder
and run "npm install"

IE/Desktop: Remove gap between slider and header (https://git-t3o.typo3.org/t3o/t3olayout/issues/500) The issue has been fixed

[BUGFIX] Use absolute link to login page

Closes #389 and #488

See merge request t3o/t3olayout!289

Resolve "Create a subnavigation"

Closes #470

See merge request t3o/t3olayout!385

This reverts commit da94c950.

Due missing split/crop VH in Frontend i needed to switch from t3o-fontawesome to default fa output.

user on mobile should be able to visit their login status

* develop: (166 commits)
  Use listPid for linking to list view in news
  Add markers for indexing the content
  Add .git to repository in composer.json
  Add gitlab_api extension as composer requirement
  [TASK] Add pathSegment to News Title in the List view
  [TASK] Style Roadmap Tabs like News Tabs
  [TASK] Make the font smaller up to max-width: 992px
  [TASK] Add Margin for headlines
  [TASK] Remove Card around related links to make it look like the rest of page
  [TASK] Remove Restriction for Accordion
  [TASK] Use correct Icon
  Change from typolink to ahref using uri so class is respected when linking to records
  Add backend user module to composer packages
  [TASK] Update Menus
  [TASK] Wrap li to fix  #488
  [TASK] Remove Accordion from Wizard and mark it as depricated in Ctype dropdown
  Add new HTML-Code for Accordion to make it look like the old one
  [TASK] Remove type from script tag
  [TASK] Add sourceset for detail-images in NewsTemplate
  [TASK] Aline Buttons on center
  ...

# Conflicts:
#	Resources/Private/Templates/Felogin/MenuBarAjaxLogin.html

Resolve "Missing Breakpoint for 4col container"

Closes #496

See merge request t3o/t3olayout!397

Add margin top to the discourse comment section on article detail

See merge request t3o/t3olayout!393

Resolve "Bottom margin of news teaser should be 0"

Closes #495

See merge request t3o/t3olayout!394

Resolve "[FEATURE] Make it possible to link the image in the infobox"

Closes #494

See merge request t3o/t3olayout!396

Increase z-index to hide pagination links

See merge request t3o/t3olayout!395