2.4.0

• NEW Full localization system (still no translations) (@pavel-karatsiuba #178)
• NEW Harmonisation of the logo (@pavel-karatsiuba #177)
• FIX Many CSS odities (@pavel-karatsiuba #178)
• FIX Broken favicon links (@pavel-karatsiuba #175)
• FIX Limited support of favicons (@pavel-karatsiuba #175)
• FIX Empty entries in language selecbox (@pavel-karatsiuba #176)
• FIX Proper suggestion/fulltext indexes (@kelson42 #181)