closes: 25 compact editor forms

[jLebioda]

Multiple UI tweaks. The list include:

in the editor form

• removed big block which occupies vertical space; instead only header is used
• reduced the padding-top in the edit boxes
• reduced the dimensions of textareas - down to 2 rows (much smaller in height)
• made save buttons block buttons (occupy the whole width)

in the list view:

• corrected formatting, it's clearer
• adjusted widths of the boxes on the left (longer filters do not need to be wrapped now) and right (browsed items)
• when viewport is small (mobile), the filters on the left disappear, and the filter button appears next to Add new
• adjusted margin of sort buttons (it matches items below)
• added help icon to help block in the top section
• lowercase in help block: Use the categories on the left or the search box below to locate contracts instead of ...Contracts
• added information on how to add a new item (mentioned button on bottom-right)

Closes #25

[jLebioda]

Moreover, the modal boxes are wider:

[vildead]

the modal boxes and editors look really much better! :) they are more compact and ... professional 🥇
list view is also better with items less spaced 👍 nevertheless they will need some tweaking imho. Once we come up with more specific design changes :)

Just one minor thing, in dataset page, header for data declarations is with light grey backround. While the rest of boxes (legal basis, storage, access,... ) has headers with no background. Is it on purpose?
I would vote for consistent style of boxes with tables.

[jLebioda]

In fact the headers had different colors; I've corrected them as well:

Thanks for watchfulness :)

[pinarpink]

@jLebioda It is tighter and much much better. I only have one comment. The "LaySummary" field is a single line, only for that one, several lines may be necessary. Thank you so much.

[jLebioda]

OK, I've increased the height of lay-summary to six lines; that should be enough

[pinarpink]

@jLebioda thanks a lot. That'll be more than enough.