Fix dashboard title

[jolheiser]

Fixes #198

Adds back in a "default" hard-coded title.

If a user navigates to the dashboard from within Reposilite, the title will remain {{ title}} - {{ description }}, but if they go straight to the dashboard URL it will be Reposilite as before.

Perhaps it should still use metaInfo and hard-code set it to something like Dashboard? 🤔
I'm fine with whichever you decide. 🙂

[codecov]

Codecov Report

Merging #199 into master will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##             master     #199   +/-   ##
=========================================
  Coverage     88.83%   88.83%           
  Complexity      491      491           
=========================================
  Files            60       60           
  Lines          1324     1324           
  Branches        137      137           
=========================================
  Hits           1176     1176           
  Misses           97       97           
  Partials         51       51           

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[dzikoysk]

That's enough for now, thanks :)