[GUI] Update translations from Transifex for 4.1

Pulls all translations for languages at or above 80% completion. Since
this is the first time we've used a minimum completion threshold, this
also removes all languages with less than 80% completion.

.tx/config

@@ -1,7 +1,7 @@
 [main]
 host = https://www.transifex.com
 
-[pivx-project-translations.qt-translation-40x]
+[pivx-project-translations.qt-translation-41x]
 file_filter = src/qt/locale/pivx_<lang>.ts
 source_file = src/qt/locale/pivx_en.ts
 source_lang = en

src/Makefile.qt_locale.include

@@ -1,34 +1,14 @@
 QT_TS = \
-  qt/locale/pivx_bg.ts \
-  qt/locale/pivx_ca.ts \
-  qt/locale/pivx_cs.ts \
-  qt/locale/pivx_da.ts \
   qt/locale/pivx_de.ts \
   qt/locale/pivx_en.ts \
-  qt/locale/pivx_en_GB.ts \
   qt/locale/pivx_en_US.ts \
-  qt/locale/pivx_eo.ts \
   qt/locale/pivx_es.ts \
-  qt/locale/pivx_es_ES.ts \
-  qt/locale/pivx_fi.ts \
   qt/locale/pivx_fr_FR.ts \
-  qt/locale/pivx_hi_IN.ts \
-  qt/locale/pivx_hr.ts \
   qt/locale/pivx_hr_HR.ts \
   qt/locale/pivx_it.ts \
-  qt/locale/pivx_ja.ts \
   qt/locale/pivx_ko_KR.ts \
-  qt/locale/pivx_lt_LT.ts \
   qt/locale/pivx_nl.ts \
   qt/locale/pivx_pl.ts \
-  qt/locale/pivx_pt.ts \
-  qt/locale/pivx_pt_BR.ts \
-  qt/locale/pivx_ro_RO.ts \
   qt/locale/pivx_ru.ts \
-  qt/locale/pivx_sk.ts \
-  qt/locale/pivx_sv.ts \
   qt/locale/pivx_tr.ts \
-  qt/locale/pivx_uk.ts \
-  qt/locale/pivx_vi.ts \
-  qt/locale/pivx_zh_CN.ts \
-  qt/locale/pivx_zh_TW.ts
+  qt/locale/pivx_zh_CN.ts