Merge pull request #759 from jemproject/development

integrate Google map fix (#757) from development branch
ignore calendar layouts when searching menu item for route (#737)

e.g. category calendar and category use the same view but if we search a category route we don't like to get a calendar
sql: prevent empty "IN ()" (#652) + minor fixes

(component only, modules and plugins not checked yet)
frontend venue view: rename "filter" to "filter-type" (fix #761)
backend categories: ensure JFormFieldList is loaded
Fix #758 GD version in backend settings configinfo
more safe gd version request (#758)
set version to 1.9.7
fix typo 'get_magic_quotes_gpc'
set creationDate of changed com/mod/plg to "July 2014" for 1.9.7
Merge branch 'master' of https://github.com/jemproject/JEM-Project
Help Files ajusted

- description of recurrence icons
- description of geotagging
Merge pull request #766 from ernst67/master

Help Files ajusted
plg_jem_comments: change number for JComments back to '2' (fix #767)
Fix #768: loading of custom css
Merge branch 'master' into development