Removing unused variables and imports
Removed duplicated google maps api include
Returning json requests instead of html responses
Using render_template instead of getting the template from jinja and making a response
Merge pull request #147 from yosiat/markers_requests

Fixing multiple things - refactor, return json and using render_template
fixed various processing invalid files issues
link for about box #119

Could not check it on my dev env now...
Merge pull request #148 from odedlaz/data_loading_refactor

fixed various processing invalid files issues
resolve #145 credit dialog