Fix loading default keybindings w/o write permissions

Closes #615
Show error when you lack write permissions to configdir
win32: Include gtk theme in minimal install
Fixed lag meter getting stuck.
Also lag_sent in struct server should have always been an unsigned long.

Fixes #749.
Allow overriding libdir
osx: Fix loading plugins from bundle
osx: Fix bundled Python
configure: Don't error when python not found
osx: Silence openssl deprecated warnings
Fixes #881  Fix two bugs --
	gtk_xtext_find_char() adjust negative y for int typecast
	gtk_xtext_find_x() return out_of_bounds TRUE if line outside windodw
	gtk_xtext_selection_draw() recognize TRUE out_of_bounds
Respect verbosity setting when building htm
Use verbose builds with travis
More autotools cleanup

- Don't build msproxy if unused
- Add resources to cleanfiles
- Remove old extra_dist from plugins
osx: generate plist file
Now make_ping_time() in common/util.c returns the time in milliseconds instead
of microseconds.
In fe_set_lag(serv, lag) the lag argument is now in milliseconds as well.

Fixes #758.
Add synIRC to network list

Closes #888
Make all parent directories when creating configdir
Prevent users from having the same alternate nicks

For some reason users do this and then complain when they cannot connect
when nick is in use. There are other ways for them to break it but at
least it shouldn't be on accident.
servlist: Add Canternet
Merge pull request #892 from ShutterQuick/patch-1

servlist: Add Canternet