logview: remove log receiver when dialog is closed
logview: limit number of lines stored in memory to 50000
log, logview: use levels instead of prefixes and colorize log view output
log: use bitwise operators for log levels matching
_entries -> entries as it is used outside log module
logview: enable minimize/maximize for log dialog windows
logview: code cleanup
Let the receiver convert time to string.
_stderr_receiver(): include ':' in format string instead of each dict entry
Drop currentThreadId in stderr output
Merge pull request #143 from zas/logview

Improve logging code and display