Merge pull request #1 from everlast/develop

some UI appearance improvement with Twitter Bootstrap.
thank you! > everlast
- modify text
- About, Contact link
modify text
- no active menu. (appearance)
- first menu to reset.
isset check ext & do in _REQUEST
correct background color setting.
change bgcolor
modify text
- image storage
fork image.php & form.php from resign.php
fork image.php & form.php from resign.php
correct to pre-fill time
split pdf.php from resign.php
modify text
require image.php (image id functions)
wallpaper: brightness to ratio merge with white
- define RESIGN_IMAGE_DIR
- fix origpath
- html escape (htmlspecialchars)
- ignore do=make
fixed to aspect of image.
pixel filter to simple.