added options dropdown menu to geomarker show, only for creator of given marker
created edit form for geomarkers, established ability to delete or add new photos to existing geomarkers
fixed update transaction - remove image and upload a new one in same transaction
wrote geomarker delete functionality
fixed ability to delete pictures fromexisting geomarkers
wrote getLastGeomarkerCreatedByUser to allow for loading of show page after creation of geomarker
Merge branch 'master' of https://github.com/michaelsharpe/hashmap

Updated geomarker interactions for edit, delete, create