moodle-tool_mergeusers - added special case for table my_pages

   * if more than a record per user appears in this table, user's MyMoodle
     is not seen correctly.
   * best option is omitting this table from being processed.
moodle-tool_mergeusers - renaming README.txt to README.md

    * this helps to see the MD format of the README file.
    * when uploading a new version on Moodle.org, the site allows you to rename the
      file from README.md to README.txt. That's not a problem ;,-)
Merge pull request #25 from jpahullo/mypages

moodle-tool_mergeusers - added special case for table my_pages
Merge pull request #26 from jpahullo/readme

Renaming Readme file
moodle-tool_mergeusers - #27 : adding specific columns for database table 'question' (https://moodle.org/mod/forum/discuss.php?d=258979#p1122814)
moodle-tool_mergeusers - #30 : description box as help icon

* moved the description box as help icon to build a simpler interface.
* updated text to remove the reference to 'ID' and replace them for 'user' references.
moodle-tool_mergeusers - #20 : user_lastaccess table to be merged

Related to issue #20:

* user_lastaccess was excluded from merging till now. As Luis de Vasconcelos suggested,
  this table should be included to be merged in order to make database consistent.
Merge pull request #32 from jpahullo/issue30

moodle-tool_mergeusers - #30 : description box as help icon
Merge pull request #33 from jpahullo/issue20

moodle-tool_mergeusers - #20 : user_lastaccess table to be merged
Merge pull request #31 from jpahullo/issue27

moodle-tool_mergeusers - #27 : adding specific columns for database table 'question'