Changing time format makes the application freeze when importing large log data files🐛

[eliasbruvik]

When importing large time logs, the page will freeze if you change time date time format input field.

Make some optimizations to avoid this lag. It should work without too much lag with the default max body size that is around 28MB.

[robertbasti]

parse and format correctly during preview and when you click import, not every time you edit input field

[robertbasti]

it is related to both - LAS and CVS