Change NO_ACT so it can be used in addition to other ignores

This results in a more flexible system and is less surprising as it means levels
can be used in the way they normally can in an ignore.

As an example the current approach to NO_ACT provides no way to let HILIGHTS
be shown, with this change /set activity_hide_targets can be recreated with:
  /ignore #channel NO_ACT
  /ignore #channel -except -regexp -pattern . NO_ACT HILIGHTS
(but obviously this can be configured in many more ways if desired).
Don't expand ALL when combined with NEVER/NO_ACT
Remove NO_ACT if we see a user specified hilight

In this path we can't look up ignores again because the print text signal
doesn't know the nick, etc. Instead just show it. The user can use -actcolor %n
or make the hilight more specific if desired.
Add NO_ACT checks for actions and notices
Add NO_ACT checks for DCC messages
Make /ignore -replies work with NO_ACT
fix compiler warnings in extended colour code
Syntax documentation rewrite for F-commands

Rewrote the syntax documentation for all commands starting with the
letter F.
Merge pull request #80 from dgl/noact

Change NO_ACT so it can be combined with other levels
Update connect.in

add trailing dot for consistency; mention that existing connections are kept
Merge pull request #83 from richlv/patch-1

Update connect.in
Syntax documentation rewrite for H-I-commands
Updated the default network list.

Added EsperNet and NetFuze, removed WebChat and LinkNet.
Updated the TARGMAX of the default servers.

Most servers were outdates with their current TARGMAX capab; everything
should be up to date now.
Improved some examples

Improved some examples.
Improved the IGNORE examples

Improved the IGNORE examples.
Wrote the missing syntax documentation for UPTIME

Wrote the missing syntax documentation for UPTIME.
Improved the default configuration file

Updated the aliases and default channels; general cleanup.
Removed the obsolete J alias

Removed the obsolete J alias.
Syntax documentation rewrite for J-K commands

Rewrote the syntax documentation for all commands starting with the
letters J and K.