Allow 20 characters for "View [organization]" button

[jpraet]

In the "View [organization]" button on the dashboard, the organization name is currently shortened to 10 chars.
This is a bit too limited. In all other places in the code where the name is shortened this was already set to 20 instead of 10.

[codecov-io]

Codecov Report

Merging #13906 (5bc5156) into master (6a37036) will increase coverage by 0.02%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master   #13906      +/-   ##
==========================================
+ Coverage   42.10%   42.13%   +0.02%     
==========================================
  Files         709      709              
  Lines       77187    77187              
==========================================
+ Hits        32502    32524      +22     
+ Misses      39333    39311      -22     
  Partials     5352     5352              

Impacted Files	Coverage Δ
modules/util/timer.go	42.85% <0.00%> (-42.86%)	⬇️
modules/queue/unique_queue_channel.go	58.06% <0.00%> (-6.46%)	⬇️
models/error.go	38.98% <0.00%> (+0.48%)	⬆️
modules/git/repo.go	46.23% <0.00%> (+0.50%)	⬆️
modules/log/event.go	60.84% <0.00%> (+1.88%)	⬆️
models/issue_comment.go	45.46% <0.00%> (+1.96%)	⬆️
modules/process/manager.go	75.00% <0.00%> (+2.50%)	⬆️
services/pull/check.go	51.82% <0.00%> (+2.91%)	⬆️
modules/git/utils.go	77.04% <0.00%> (+3.27%)	⬆️

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