Merge pull request #8 from swiffer/master

merged this tentavely for 1.0 
will require further testing, though
fixes on pdo port

first testing of PDO port with selenium and several bugs discovered were
fixed:
* Fileupload not working
* Adding messages not working
* Checking of project assignment (chkproject) still using mysql_query
* Installer using mysql_query
updated changelog
implemented CSV export

and some bugfixes to PDO
ported installer to PDO

and started porting over SELECT statements to use prepared statements,
too
open ID login

initial commit . adapted to PDO. tentavely for 1.0 but needs serious
testing. contributed by 0perat0r
static css removed t abs

+ Switched to using a precompiled static CSS file in production instead
of dynamically compiling it at runtime. This saves many call to the php
interpreter.
+ Removed the tabs "my tasks" , "my projects" , "my messages" from the
tabbar on the desktop. those tabs were redundant for quite some time
now. all their information is, in condensed form, also on the desktop.
they can be reinstated by editing tabsmenue-deskt.tpl
bugfix avatar upload

+ Fixed a bug preventing people from uploading avatar images
initial commit for sqlite support

needs a lot more work though
sync templates
css
slightly changed truncation of project titles

to prevent
http://collabtive.o-dyn.de/forum/viewtopic.php?f=11&t=8750#p17251
fixed css bug

https://github.com/philippK-de/Collabtive/issues/4
timetracker and truncation

++ Changed the truncation of project titles and task titles on the
desktop slightly to prevent
http://collabtive.o-dyn.de/forum/viewtopic.php?f=11&t=8750#p17251
++ Made timetracker show closed tasks in addition to open tasks when
editing a task (
http://collabtive.o-dyn.de/forum/viewtopic.php?f=11&t=8749 )
set folder option on click

+ When clicking on a folder set the folder in the select menu for add
file and add folder to the clicked folder.
this way you can upload into
a folder you just clicked straight away.
changelog
removed IE7 compatibility
removied ie7 compat
file improvements

+ Files: Made listview / gridview switch respect the currently selected
folder when switching views
+ Made the uploader respect the currently selected folder when
refreshing. Now after an upload is complete the view will refresh
the subfolder to which a file has been u ploaded and not always the main
folder.

Removed more file/folder visibility code.
edit tasks

the new way in project->tasks, too