Add separate string for the 'Create Team' button.

[bugreport0]

For consistency in the translation, the label for starting to create a new team should be 'New Team' while the actual button for doing so should be labeled 'Create Team'.

[codecov-io]

Codecov Report

Merging #3647 into master will increase coverage by <.01%.
The diff coverage is n/a.

@@            Coverage Diff            @@
##           master   #3647      +/-   ##
=========================================
+ Coverage    35.9%   35.9%   +<.01%     
=========================================
  Files         286     286              
  Lines       41312   41312              
=========================================
+ Hits        14833   14835       +2     
+ Misses      24298   24297       -1     
+ Partials     2181    2180       -1

Impacted Files	Coverage Δ
models/repo_indexer.go	48.3% <0%> (ø)	⬆️
models/repo_list.go	67.18% <0%> (+1.56%)	⬆️

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