Use case. As a user I want intuitive and clean UI to make right configuration of items more easily.

Issue. In items configuration form there is circumlocution in "History storage period" and "Trend storage period" fields.

Task. 

1.Change label on items configuration screen (hosts & templates):

1.1. From "History storage period"  to "History";

1.2. From "Trend storage period" to "Trends".

2. For both fields (1.1 & 1.2) set option labels:

2.1. From "Do not keep history" to "Do not store";

2.2. From "Storage period" to "Store up to".

UI example attached img1.png.