ZEPPELIN-2459 Zeppelin Usability Improvement for new paragraph

[r-kamath]

What is this PR for?

Move cursor to second line for new paragraphs

What type of PR is it?

Improvement

Todos

• - Task

What is the Jira issue?

ZEPPELIN-2459

How should this be tested?

For a new paragraph he initial cursor position should be on the second line.

Screenshots (if appropriate)

Before

After

Questions:

• Does the licenses files need update? n/a
• Is there breaking changes for older versions? n/a
• Does this needs documentation? n/a

[prabhjyotsingh]

Tested locally, LGTM.

[zjffdu]

BTW, could we change the cursor to a slim line ? I heard people complain about the cursor too thick

[r-kamath]

@zjffdu I think we should handle the cursor style in a different jira

[zjffdu]

@r-kamath Yeah, no problem.

[prabhjyotsingh]

Merging this if no more discussion.