Feature - "freeze" first row on filters

A bit like on spreadsheets we could make the first column freeze so the user that not have to scroll the whole screen, just the filter.

the feature, disabled by default, applies per filter (as another setting) and is managed from the front end with a button or from the filter manage options. if its enabled on the front end is enabled in manage, vice versa. the setting once selected is “saved”.

once the first column is freeze the scrollbar on the left allows you to move up and down. if you need to go to the right or left you need to use the built in browser/ mouse scroll we already have.

this makes reference to the following original idea: Feature(s) - New 2.x Template Filters

Int ref: https://github.com/eramba/eramba_v2/issues/2514


done on e2.13.0