Added an extra string formating in import functionality when all the
letters are upper case. In import implemented creation of next element
if the Navigable attribute of the Association end Property is set to
true, also during export if Next element is present corresponding
Navigable attribute will be set to true. Changed number of stereotypes
needed to set for the UML elements during export and import of Eclipse
UML2 model. Changed the tags that are in the stereotypes.
Added a new check in the string formating during import of Eclipse UML2
models. In ProjectExporter class changed that during retrieving the name
of the VisibleProperty adds prefix a_ because of the possibility of the
user setting the name to a java command, also during creation of the
zoom attributes changed that it uses the name of the Zoom element
instead of the name of the class, because of the possibility of multiple
Zoom elements in one StandardPanel targeting the same StandardPanel.
Merge branch 'master' of https://github.com/KROKIteam/KROKI-mockup-tool

Conflicts:
	KrokiMockupTool/src/kroki/app/export/ProjectExporter.java
Changed naming of the zoom and next fields when there are multiple zoom
elements in one StandardPanel targeting the same StandardPanel, to start
adding extra letters to the name from the second zoom and next element
that would have the same names set.