Removed create_title_bar from ui.h
Removed titlebar functions from ui.h
Removed statusbar functions from ui.h
Tidied new headers, added defines
Removed inputwin functions from ui.h
Removed unused inputwin module init
Fixed spelling in comment
Makefile.am: fixed spacing
autotools: install themes during 'make install'

Default path for themes is ${pkgdatadir}/themes that usualy equals to
/usr/share/profanity/themes. This patch also introduces new option
--with-themes[=PATH] that specifies installation path. This option can
be used for cancel of installation at all: --without-themes.

References: issue #323
config/theme: search for system-wide themes

Search for system-wide themes (usually /usr/share/profanity/themes) if
not found in user's home directory.

Not tested yet.
Command argument parsers set result argument
Refactored cmd_execute
Refactored invalid command usage
Added ui_unknown_command
Added ui_already_connected
Added themes supplied by p41nm47r1x
Revert "Added ui_already_connected"

This reverts commit e97ec56fce641554ff7aa2ff9f0583e1fb9fc364.
Revert "Added ui_unknown_command"

This reverts commit 714ee2486353361898df7f5bb339e9be3f456830.
Implemented "/bookmark add" for private storage

Issue #194
Clean up after removing bookmark

Issue #194