Update portuguese_br.js

Some semantic fixes. :)
Create polish.js

Translation to Polish 99% complete.
Merge pull request #137 from SpiderBTT/patch-1

Create polish.js
Merge pull request #136 from lcharles123/patch-6

Update portuguese_br.js
New language polish.js moved to correct place, updated languages.js. Using .ico files as icons rather than .png.
bump version to 0.4.8-BETA
jnlp files update to show icon in the java cache viewer.
bump version to 0.4.9-BETA