CSS: replace tabs by spaces, remove trailing whitespaces and empty lines

Signed-off-by: VirtualTam <virtualtam@flibidi.org>

Conflicts:
	inc/shaarli.css
CSS: unify coding style - spaces, brackets, keywords

Spaces:
- before an opening bracket
- before a closing bracket
- between a keyword and its value(s)
- between comma-separated selectors

Signed-off-by: VirtualTam <virtualtam@flibidi.org>

Conflicts:
	inc/shaarli.css

Conflicts:
	inc/shaarli.css

Conflicts:
	inc/shaarli.css
CSS: expand one-line declarations

Signed-off-by: VirtualTam <virtualtam@flibidi.org>

Conflicts:
	inc/shaarli.css
CSS: separate rules with a blank line

Signed-off-by: VirtualTam <virtualtam@flibidi.org>
Merge pull request #28 from virtualtam/unify-css

Unify css