1. WrapTextTrigger -> wrapTextTrigger
2. WrapTextTriggerLock -> wrapTextTriggerLock
3. TopMostTrigger -> topMostTrigger
4. TopMostTriggerLock -> topMostTriggerLock
5. ShowToolbarTrigger -> toolbarTrigger

1. add menu items for `clear logs`, `change fonts`, `wrap text` and `top most` functions.
2. hide toolbar default. but you can trigger it out by menu.

Sometimes the users may hit enter key by mistake, and the form will
close without saving entries.

1. add `clean log` feature
2. add `change font` feature
3. add `wrap text` feature
4. add `top most` feature

2 fixes, 1 feature, 1 code beautify

1/ removed dual empty line
2/ removed tailing spaces
3/ converted tabs into spaces
4/ added some TODO comments

Strategy: Simply Choose By Statistics

To add multiple servers in android phone, now it is no need to chose server one by one and generate QRCode for each. Just need to select the server listed in right.

1. only enable menu items relevant to pac status
2. rename edit pac file into edit local pac file
3. users are allowed to enable online pac then input online pac url, not to input then enable