Feature: Move Search box to the Main screen (Mobile view)

[joel72265]

Thank you for the wonderful application.

Feature request:

1. Mobile View: move the search icon from the side panel to the Main screen as searching for a word is a key function.
2. Mobile View: single click to open note (currently two clicks are needed to open a note, when you search for a word/note one click to select the note > another click to open the note)

Thank you,
Joel