Rikaichan for Android 5.2

• Fix options

Rikaichan for Android 5.0

• Fix bugs
• Update dictionary
• Use Rikaisama as core

Rikachan for Android 4.0

This is a complete rewrite of the addon.

User-facing changes include:

• removal of alternative view
• simplified options
• removal of names dictionary
• updated ja-en dictionary
• popup is slightly translucent
• show when Rikaichan is enabled in the menu