fcitx: several bugfixes
This update fixes the following issues with fcitx:
- bnc#851983: fix systray icon problem
- fix potential risk of current ENV
- support sogou pinyin released by Sougou INC.
- artwork update
- Submitted by Marguerite Su (MargueriteSu)
Fixed bugs
bnc#851983
fcitx tray icon is incompatible with other systray icons