Update src/skin/fireftp.css.

* remove units from zero
* remove duplicate property
* use a couple of properties more consistently
Losslessly compress images.

Before: 34,2 KB (35.067 bytes)
After:  28,1 KB (28.868 bytes)
Whitespace normalization.
Fix bogus translation string.
Update readme.md.

Mention the `--recursive` clone switch.
update charset menu for browser compatibility
version 2.0.20
fix regression with caching not working in Firefox 32
Merge pull request #85 from XhmikosR/pt-PT

Fix bogus translation string.
Merge pull request #86 from XhmikosR/whitespace

Whitespace normalization.
Merge pull request #87 from XhmikosR/img

Losslessly compress images.
merge whitespace changes
Merge branch 'XhmikosR-css'
Merge pull request #93 from XhmikosR/readme

Update readme.md.