show bar chart for report by choosing x and y axis
first check if x and y axis are provided then fetch the records
format x labels for better display
show fancy legend
show histogram for report values
add histogram link in design fields and show histogram on click
change name for bar chart button to show bar chart
show datatype in design field
add liteTxt style class
correct between and in clauses in where condition
+ OR condition issue
Merge branch 'where_clause_operators' into dev
Merge branch 'dev' into report_graph

Conflicts:
	qbeapp/utils.py