Changes to add contact info to the footer and a community information section to the TM2 main page.

These changes make use of the customize.mako template facility to add easily changeable text to the footer and places a "community information" paragraph to the main page of the TM2. The customize.mako template is populated with HOT specific text in the github repository and is intended to be changed by anyone else doing an installation of the TM2 software.

I also changed the existing "About" link text in the footer to "About the Tasking Manger" to make it more clear where they link was leading.

One thing to note in file  osmtm/templates/home.mako I had to add in the namespace declaration even though I expected it to be part of the inherited base.mako template. It did not work until I added the namespace line specifically on the home.mako template.