Update EntityDefinition.json

Da die langen Interpreterbezeichnungen auf mobilen Endgeräten teilweise die tabellarische Darstellung zerstören, schlage ich eine kürzere Variante vor. Diese Textlängen sind auf meinem iPhone5, 7" Android Tablet und dem iPad fehlerfrei.
Removed duplicate code
Merge pull request #91 from andig/tests

Merging as only test cases affected.
Remove calculating min/max/avg for groups. Not needed, bad for performance, bad idea.
Allow multiple uuids
Merge pull request #93 from andig/vzclient

Allow multiple uuids
fixed a typo
Improved aggregation optimizer- less queries, fixed MySQLOptimizer tuples=n optimization not being called
Ensure clean properties aren't considered dirty
Merge pull request #94 from andig/agg-fix

Improved aggregation optimizer
Merge pull request #95 from andig/fix-entity-persist

Ensure clean properties aren't considered dirty
Merge pull request #92 from andig/aggregate-view

Remove calculating min/max/avg for groups. Not needed, bad for performan...
Merge pull request #87 from andig/master-timestampfix

Make all interpreters use timestamp at end of period
Fix JpGraph modules not loaded after composer upgrade
Merge pull request #97 from andig/jpgraph

Fix JpGraph modules not loaded after composer upgrade
Add export of multiple UUIDs
Merge pull request #98 from andig/export-multi

Add export of multiple UUIDs
Shift timestamps by 1 tuple for "steps" mode
Merge pull request #99 from andig/fix-timestamp-2

Shift timestamps by 1 tuple for "steps" mode
Make secondary axis configurable and add gas meter and valve