Added language selector

[DreierF]

Working on #293 ToDo:

• [x] Rearrange settings entries
• [x] Add UI test

[codecov-io]

Codecov Report

Merging #308 into beta/260 will decrease coverage by 0.64%. The diff coverage is 49%.

@@              Coverage Diff               @@
##             beta/260     #308      +/-   ##
==============================================
- Coverage        35.3%   34.66%   -0.65%     
+ Complexity       1070     1054      -16     
==============================================
  Files             279      280       +1     
  Lines           10769    10827      +58     
  Branches          917      921       +4     
==============================================
- Hits             3802     3753      -49     
- Misses           6669     6774     +105     
- Partials          298      300       +2

Impacted Files	Coverage Δ	Complexity Δ
...rgets/features/help/licences/LicencesActivity.java	0% <ø> (ø)	0 <0> (?)
...rgets/features/help/licences/LicencesFragment.java	0% <ø> (ø)	0 <0> (?)
...argets/features/scoreboard/ScoreboardActivity.java	0% <0%> (ø)	0 <0> (ø)	:arrow_down:
...mytargets/features/scoreboard/ScoreboardImage.java	0% <0%> (ø)	0 <0> (ø)	:arrow_down:
...r/mytargets/features/settings/SettingsManager.java	94.86% <0%> (-1.92%)	76 <0> (ø)
...argets/features/settings/about/DonateActivity.java	0% <0%> (ø)	0 <0> (ø)	:arrow_down:
...e/dreier/mytargets/features/help/HelpFragment.java	0% <0%> (ø)	0 <0> (ø)	:arrow_down:
.../java/de/dreier/mytargets/shared/models/Score.java	0% <0%> (ø)	0 <0> (ø)	:arrow_down:
...ts/base/activities/SimpleFragmentActivityBase.java	47.82% <0%> (+4.34%)	4 <0> (+1)	:arrow_up:
...reier/mytargets/features/scoreboard/HtmlUtils.java	17.5% <10%> (ø)	13 <0> (ø)	:arrow_down:
... and 19 more

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