a) some hundred lines of code from childwin.pas to main.pas
b) redundant hints/captions/shortcuts/events for similar buttons/menuitems to their corresponding TAction in main.dfm .
This change
a) avoids several inconsistent captions like described in issue #595
b) makes it easier to have toolbars on the mainform which are controlled by childform.
- Remove the "Donate" button and add a more eye catching "Make donation by Paypal" logo below the MySQL logo
- Rename "Support forum" to what it is: a "User to user forum"
- Add a "Check for updates..." button right besides the version infos which basically calls the updatecheck dialog.
- Implement an alternative solution for handling sorted columns without usage of SMDBGrid's sortcolumns. Move relevant structures and functions from data_sorting.pas to childwin.pas and use them in both units.
- Upgrade some code parts to use WideStrings instead of Strings so they don't break with the new grid.
- Use Grid.OnDrawDataCell as an alternative to Grid.OnGetCellParams as the latter one is a feature of SMDBGrid
- Cosmetic: enhance screen real estate in viewdata()
