Merge pull request #3 from simpleinvoices/master

Merge with Parent
product_attributes id duplicate fixed

Updated product_attributes id to 25 since 24 was already allotted to inventory.
structure.sql code cleanup
missing final semi-colon in structure.sql fixed
Ordered tables in Full_Simple_Invoices.sql to match structure.sql
Former is upto Patch 253 only
Latter has product attribute tables and product matrix tables.
Product matrix is now an extension which contains the product attributes as well. Must these tables be in structure.sql or must they be added to Full_Simple_Invoices.sql ?
Product Matrix Extension: cannot insert into field without first defining it and TB_PREFIX substitution
DESCRIPTION and README for all extensions - placeholders, TB_PREFIX substitution
CRLF => LF, TB_PREFIX substitutions in extensions
All CRLF => LF done
Done using:
apt-get install dos2unix
find ./simpleinvoices -name "*" -type f -exec dos2unix {} \;
Bleeding Edge Git Code Link provided
Line formatting to bullets
Removed collations so that DB defaults can kick in.
Is this file databases/mysql/Full_Simple_Invoices.sql used at all?
databases/mysql/Full_Simple_Invoices.sql updated to Patch 273
Patch Manager Auto Number IDs in sequence.
json duplicate patch 210 record removed
large_dataset record in sysprefs json entered
Updated Full_Simple_Invoices.sql to Patch 273 - is it used?
Merge pull request #61 from apmuthu/master

Merge from AP pull#63 - re structure.sql ordering, json data id dupe fix