Fix/#2925 fixed copying data point in freshly created data source

[Patrykb0802]

• Added forced URL reload after saving data source for correct data source id

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Java Script Mocha Unit Test Results

268 tests  ±0   268 :white_check_mark: ±0   4s :stopwatch: ±0s  70 suites ±0     0 :zzz: ±0    1 files   ±0     0 :x: ±0 

Results for commit ba069e60. ± Comparison against base commit 908a6201.

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Java JUnit Test Results

2 050 tests  ±0   2 050 :white_check_mark: ±0   25s :stopwatch: -1s   105 suites ±0       0 :zzz: ±0    105 files   ±0       0 :x: ±0 

Results for commit ba069e60. ± Comparison against base commit 908a6201.