SMF-Top-First-Post v2.0.6

Add README.bbc for package manager.
Replace error="ignore" with error="skip" for modification.xml.
Add english-utf8.

SMF-Top-First-Post v2.0.5

Fix button image for custom themes.

SMF-Top-First-Post v2.0.4

Minor updates.

SMF-Top-First-Post v2.0.3

Fix empty default value.

SMF-Top-First-Post v2.0.2

Fix mysqli support.
Package structure refactoring.