Issue724 group tab shorten uris

[kouralex]

Fixes #724 .

Additionally addresses the following issues:

1. Adds support for characters -_~ in shortened URIs (see https://en.wikipedia.org/wiki/Percent-encoding#Types_of_URI_characters for more information)
2. Standardizes behavior between groups and hierarchy tabs (use same code).
3. Removes a previously unnoticed error that happened to set the parameters in some cases as ?uri=xxx?clang=yy instead of the correct ?uri=xxx&clang=yy way.

[sonarqubecloud]

Kudos, SonarCloud Quality Gate passed!

0 Bugs
0 Vulnerabilities (and 0 Security Hotspots to review)
0 Code Smells

No Coverage information
0.0% Duplication

[kouralex]

Side note: support for 1) was needed in order to address issues in, for example, AGROVOC, see http://skosmos.dev.finto.fi/agrovoc/fi/page/?uri=http%3A%2F%2Faims.fao.org%2Faos%2Fagrovoc%2Fc_36791

[codecov]

Codecov Report

Merging #1013 into master will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##             master    #1013   +/-   ##
=========================================
  Coverage     60.29%   60.29%           
  Complexity     1592     1592           
=========================================
  Files            32       32           
  Lines          4425     4425           
=========================================
  Hits           2668     2668           
  Misses         1757     1757           

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[joelit]

Tested to work. Good job cleaning up the js code!