charts_graphs 6.x-2.7

Changes since 6.x-2.6 (20 commits):

• task by rsevero: Updating CHANGELOG.txt for release.
• feature #1000718 by roborat and rsevero: Implemented title colour property for Google Charts.
• task #1133818 by rsevero: Updated amCharts installation instructions.
• feature #996690 by hish and rsevero: Implemented support for several different chart types on the same graph.
• feature #999460 by roborat and rsevero: Implemented legend position parameter for Google Charts.
• bug #992142 by roborat, dsnopek and rsevero: Fixed scaling in Google Charts with several series.
• feature #996448 by justafish and rsevero: Created new general property "theme", implemented it on the Bluff library, documented it on all charting libraries and created new provider "themes" property to list all available themes for each charting library.
• bug #957672 by rsevero: Implemented new 'orientation' parameter for Bluff library with which the user can force rows or columns to be mapped as data series.
• bug #1024734 by btbroot and rsevero: Removed open-flash-chart.swf file from release as it's LGPL. Fixed Open Flash Chart 2 library name across the code.
• bug #1024734 by rsevero: Created INSTALL.TXT file for Open Flash Chart 2.
• bug #1024734 by btbroot and rsevero: Included bluff-src.js file.
• bug #1024734 by btbroot and rsevero: Removed open-flash-chart.swf file from release as it's LGPL. Fixed Open Flash Chart 2 library name across the code.
• bug #1024738 by btbroot and rsevero: Removed .cvsignore files.
• bug #1024744 by btbroot and rsevero: Removed excessive license file from Bluff directory.
• bug #1024730 by btbroot and rsevero: Removed excanvas.js as it's not GPL. Fixed Bluff's installation instructions also.
• bug #1006058 by rsevero: Fixed Open Flash pie charts when x_labels array keys aren't 0, 1, 2 etc.
• bug #1006054 by rsevero: Fixed amCharts pie charts when x_labels array keys aren't 0, 1, 2 etc.
• bug #1003432 by rsevero: Fixed pie charts across graphing libraries.