Subject: Long press table rows for drilldown

Description:
1. instead of just click, long press to drilldown rows

2. change the closing bal text colour depending upon the
   the type of balance Dr/Cr

3. Display closing bal type of account with its type Dr/Cr
Subject: Ledger drill drown for Journal

Description:
1. drill down to create voucher error for journal
   voucher type.
2. voucherType flag from ledger drill down not changing.
Merge branch 'holo_theme' of http://github.com/androportal/ABT into holo_theme
Subject: Changes in help link

Description:
1. Long press on search transaction rows
Subject: Change in installation URL

Description:
Subject: reset voucher number field after edit voucher

Description:
Subject:Added new field for entering cheque details,show up details in bank reconciliation
        and search voucher

Description:
1. Added a field for cheque.
2. View cheque details in bank reconciliation
3. Removed unwanted code from create voucher from changevouchertype() method.