Fix WebUI gzip compression. Closes #1037.
Fix compilation with qt < 4.8.0. Closes #1043.
Sync translations from Transifex.
Update Changelog.
Bump to 3.1.2
Make all columns and headers use the same text alignment in the transferlist.
Revert "fix missing conf.pri error". The WARNING message during configure is harmless. The file is found during make. Closes #1042.

This reverts commit 807f1cfb9437b2095a75fdd0e1723d1c2cd965dd.
Case insensitive sort in Peers list. Closes #1066.
Small optimization of WebUI responses when there isn't a data payload.
Update Changelog.
Hide empty folders after filtering. Closes #74.
Expand folders when filtering files. Closes #1076.
Fix indentation in lineedit code.
Update Changelog.