Ad space after the user name

The space was missing in comment (the tag was adhered to the username)
Merge pull request #1041 from matheod/spaceTag

Add space after the user name
Don't show Full context link if it's a top comment
Merge pull request #1067 from matheod/contextModule

Don't show Full context link if it's a top comment
Add hover effect on temporarily button to make it easier to understand
Merge pull request #1068 from matheod/temporarilyFade

Add hover effect on temporarily button to make it easier to understand