Add UI button to reset zoom to 1:1:
- create button and icon
- maintain reset zoom independant for each tab
- attach shorcut to button (removed from widgetzoomhandler)
fix #322
Merge branch 'master' of github.com:nullas/appleseed
minor tweaks
- wrong tweak reveret back
-clean some typo issues
fix #322. Test whether pointer return by malloc is 16-bit aligned
fix #322. Romove unused header file
fix #322. Stick to the code style.
fix #332. Stick to the coding style
Merge branch 'master' of github.com:nullas/appleseed
added file changes watching system

QFileSystemWatcher takes care of the changes in the file, and reloads
the project when a project is loaded if the user changes contents of the
file.
Just add a watch_file_changes parameter with value true to your
appleseed.studio.xml
Added filtering entities by regexp in Entity Browser window.
fix #322. Rearrange the order of header files
Merge remote-tracking branch 'appleseedhq/appleseed@github/master'

Conflicts:
	src/appleseed.studio/mainwindow/mainwindow.h
small code tweaks.
Merge pull request #373 from nullas/master

Fix #322
Merge pull request #372 from fewo/master

Add UI button to reset zoom to 1:1:
fixed minor coding and styling issues.
Merge branch 'master' of github.com:appleseedhq/appleseed