controlpanel.cpp: Fix bug for "Disconnect" help

This fixes a bug in which providing empty data for the 'disconnect' command for controlpanel will return the 'reconnect' command's syntax help, which can confuse users.
A bit more consistency bewteen Del* and Rem*

Thanks to Kult for reporting this
Merge pull request #294 from TheLordOfTime/master

controlpanel.cpp BugFix: Empty 'disconnect' command returns 'reconnect' syntax help
controlpanel.cpp: Increases general verbosity of command results.
controlpanel.cpp: Standardize error wordings

When a network cannot be found for a user, and where a command will output an error under such circumstances, use similar wording in each message.
Show password in --makepass in new format
Merge branch 'master' of github.com:znc/znc
controlpanel.cpp: Fixed a Fail to Compile error introduced in prior commit.
Fix PartyLine so that forced channels may not be left at all - users will be rejoined at once.
Merge commit 'refs/pull/295/head' of github.com:znc/znc
Catch as references
Merge commit 'refs/pull/303/head' of github.com:znc/znc
Cleaned up more warnings.
Merge commit 'refs/pull/304/head' of github.com:znc/znc
Fix issue introduced in previous commit.
Explain that altering znc.conf by hand is a bad idea. Fixed a typo.
Remove unneeded headers.
HTTPSock: Gzip compression for static files (text/* mime types + files
with .js extension) and dynamic HTML responses (if gzip is available and
the compression method is supported by the requesting HTTP client).
Get rid of empty CHTTPSock::WriteFileGzipped method if there's no zlib. It's still in the header, but this does not have any negative side effects.
Add a generic threads abstraction

This should make it easier to work with threads. It provides classes for mutexes
and condition variables. Additionally, there is a special CMutexGuard that
automatically unlocks the mutex on destruction and a CThreadPool class.

This thread pool is used to replace the thread pool in the sockets code.

Signed-off-by: Uli Schlachter <psychon@znc.in>