Use the active branch for the code tab

[Bwko]

Fixes #2147

[codecov-io]

Codecov Report

Merging #3720 into master will increase coverage by 0.01%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #3720      +/-   ##
==========================================
+ Coverage    22.9%   22.91%   +0.01%     
==========================================
  Files         124      124              
  Lines       24750    24750              
==========================================
+ Hits         5669     5672       +3     
+ Misses      18218    18216       -2     
+ Partials      863      862       -1

Impacted Files	Coverage Δ
modules/process/manager.go	73.91% <0%> (+4.34%)	⬆️

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[lafriks]

Currently it breaks link at least from multiple places and it should be at least:
{{if (and (not .IsBareRepo) (ne .BranchName .BaseRepo.DefaultBranch) .BranchLink)}}{{.BranchLink}}{{else}}{{.RepoLink}}{{end}}

Also it does not seem to go to correct branch from commit lists as BranchLink does not seem to have value set in that handler

[Bwko]

@lafriks Fixed

[lafriks]

@Bwko please backport to release/1.4