Remove pricing details javascript file

As it is used for jstree, and jstree is not used anymore on
frontend
Remove jstree from the javascripts
Latest translation files
Merge pull request #20 from raunakkathuria/master

Remove jstree & pricing details js
Release v2.4.1
Latest PO(T) files
Translated using Weblate (Indonesian)

Currently translated at 100.0% (2652 of 2652 strings)
Translated using Weblate (Spanish)

Currently translated at 100.0% (2652 of 2652 strings)
Show date irrespective of weather there is data to show
Translated using Weblate (Russian)

Currently translated at 100.0% (2652 of 2652 strings)
Translated using Weblate (Spanish)

Currently translated at 100.0% (2652 of 2652 strings)
Merge remote-tracking branch 'origin/master'
Translated using Weblate (Simplified Chinese)

Currently translated at 100.0% (2652 of 2652 strings)
Update README.md
Merge remote-tracking branch 'them/master'