Issue1436 global search template

[joelit]

Reasons for creating this PR

Twig template for global search

Link to relevant issue(s), if any

Fixes #1481 . This PR is based on #1470, and it should be reviewed first.

Description of the changes in this PR

• global-search.twig
• font awesome icons
• multi-purpose search-results.inc

Known problems or uncertainties in this PR

• The header is lacking the search bar

Checklist

• phpUnit tests pass locally with my changes
• I have added tests that show that the new code works, or tests are not relevant for this PR (e.g. only HTML/CSS changes)
• The PR doesn't reduce accessibility of the front-end code (e.g. tab focus, scaling to different resolutions, use of .sr-only class, color contrast)
• The PR doesn't introduce unintended code changes (e.g. empty lines or useless reindentation)

[sonarcloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
14 Code Smells

No Coverage information
0.0% Duplication

[codecov]

Codecov Report

Patch and project coverage have no change.

Comparison is base (fe8e74a) 70.19% compared to head (ec0f4ff) 70.19%.
Report is 6 commits behind head on skosmos-3.

Additional details and impacted files

@@             Coverage Diff              @@
##             skosmos-3    #1469   +/-   ##
============================================
  Coverage        70.19%   70.19%           
  Complexity        1642     1642           
============================================
  Files               32       32           
  Lines             4314     4314           
============================================
  Hits              3028     3028           
  Misses            1286     1286           

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[sonarcloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
17 Code Smells

No Coverage information
0.0% Duplication