CSSTidy Code

Fixed PHP notice on undefined index

Fixed minor bug in resolving font-property (numeric / negative / with dot).
A bit improved background-position (now also handles dots in numbers).

Separated shorthands optimization - font now enabled with value 2, font + background - with value 3. Value 1 is completely safe.

Added font property resolving (works by default on optimize_shorthands=1).
Tuned unit tests with settings.
Added unit test about multiple font-family.

Fixed bug with resolving second negative background-position value.

Added ctype_alpha (not very good, because of only English locale) 'clone'

Added unit tests for shorthands (padding / margin / font-weight / background) and properties (CSS1 / CSS2.0 / CSS2.1).
Need to add shorthand for
'font'
Value: [ [ <'font-style'> || <'font-variant'> || <'font-weight'> ]? <'font-size'> [ / <'line-height'> ]? <'font-family'> ] | caption | icon | menu | message-box | small-caption | status-bar | inherit

Added outline to unit_values, deleted position from there. w3.org:
'position'
Value: static | relative | absolute | fixed | inherit

Quotes behavior verified

Fixing problems with quotes in attributes selectors and quoted charset/import/namespace. No more problems with quotes detected