Collect and save alltime UL/DL samples
Add dialog to show statistics
Fix WebUI link to 'Anonymous mode' explanation. Closes #1093.
Correctly update tracker tier number in the trackers tab. Closes #1075.
Revert "Don't prefer TCP connections over uTP."

This reverts commit a0529637758b6136176c4d735528b9fdb1ec7428.
Improve detection of conf.pri.
Merge pull request #1105 from Gelmir/stats

Add statistics dialog
Improve the message of the deletion dialog. Closes #1073.
Add tooltip for the peers' flags. Closes #1068.
Run lupdate.