* Also, convert the donate button to a second label on the menu, so it's less intrusive than before. See http://www.heidisql.com/forum.php?t=13446
* With the "Update available" label visible all the time, we check for updates also for builds, but only show the update check dialog if the user has activated "Check for builds also" option.
* Decrease connect timeout for donation state check from 30s down to 3s, so especially on application start noone has to wait too long only because heidisql.com is down again.
* Return TThreeStateBoolean in HasDonated(), so we can display an appropriate warning when the HTTP check was unsuccessful
* Sanitize main unit from unused variables
* Move global variables to public scope
* Bring public vars into some reasonable order
* Move constants to const.inc, unless dependent from some used VCL unit
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.
Implements a simple dialog which tells the user if there is some new release or nightly build available. Parses http://www.heidisql.com/updatecheck.php as a .ini file. Download buttons just start the webbrowser currently.
Todo: Automatic invocation of this dialog at regular intervals (for example once a week)
Todo: Automatic download + update + restart
