fixes #1493 - added function to display the number in the thousands/millions/billions (k/m/b) format
                    - ensured that it also works with negative values
                    - two decimal places
fixes #1432 - Request Membership: add padding to text box label
fixes #1430 - My Organisation: add a space after "+"
fixes #1429 - Registration Page: add padding below the "create account button"
fixes #1551 - Search indicator preview
                    - reset the graph module initialized flag
Merge pull request #1525 from OCHA-DAP/arti-sprint-36

improvement in values display on graph + bug fixes