Fix encoding issues with rss

Some records were not being displayed in firefox.  Send proper headers and use htmlspecialcars on text from the database.
Don't use htmlspecialchars() in dbStringToHTML()

This causes with problems because it is used in more than just the XML output.  htmlspecialchars() should be specific to rss output.
Move escaping to savvy
Merge pull request #89 from mfairchild365/issue-36

Fix validation issues with rss output
Add history API support to day,event views
Event instance heading link should inherit link color.
Add strict declaration to javascript
Use the home URL for the "Today" link href

Allows for users to use it to open as they desire.
Add markup to support responsive tables on week/month view
Add custom patched version of sticky-kit
Add id to main script to allow for easier relative includes
Add sticky heading/sidebar support

WARNING: This can be rather buggy in responsive changes.
Hide responsive month cells of previous or next month.
Add support for keyboard change month shortcut Alt + Arrow
Add year navigation to year template and style
Merge pull request #91 from unl/kabel-four

Sprint 1 Day 5
Send UTF-8 encoding
Add a method to handle mutlibyte ical wrapping
Use the new ical_slit() method
Merge pull request #93 from mfairchild365/issue-90

Don't send invalid characters in ical output