Changed question display to Markdown-friendly.

Changed placeholder instructions on new question form to reflect
Markdown friendly, also additional suggestions for tags.
Deleted unused file
Put add answer form in modal popup
Edit Answer in Modal Window
Hid the comments section, looks much cleaner without
Got rid of space between search box and button
Got rid of panel background for Answer Question button
Moved the answerquestion, login links to flash-notice
Fixed code line numbering spacing, alignment problem
Changes to about page
Changes to about page
Modified flash alerts