Refactor _current_user partial to remove logic from view.
* place methods in project model.
* refactor @pace_needed variable in home controller to round down to whole integer.
* refactor project model methods to reduce redundancies.
Refactor home controller, project model, and _current_project further.
* display remaining time with @time_left variable, encompassing conditional logic in project model.
* floor project.time_left values to display whole numbers.
Update Gravatar check to loop through all user's project except current.
* still need to implement logic for when there is only one project; double displays that project currently.
* fix label on Login submit button.
* reformat details on users#show view.
Merge pull request #64 from tiger-swallowtails-2014/ES_CR_refactoring_current_project_view

Es cr refactoring current project view.
CF MERGE - refactoring across project model, home controller, and current project partial.